diff --git a/android/app/src/main/java/com/example/petstoremobile/api/CustomerApi.java b/android/app/src/main/java/com/example/petstoremobile/api/CustomerApi.java
index 02700075..855ba5fa 100644
--- a/android/app/src/main/java/com/example/petstoremobile/api/CustomerApi.java
+++ b/android/app/src/main/java/com/example/petstoremobile/api/CustomerApi.java
@@ -1,6 +1,7 @@
 package com.example.petstoremobile.api;
 
 import com.example.petstoremobile.dtos.CustomerDTO;
+import com.example.petstoremobile.dtos.DropdownDTO;
 import com.example.petstoremobile.dtos.PageResponse;
 
 import java.util.List;
@@ -18,4 +19,7 @@ public interface CustomerApi {
 
     @GET("api/v1/customers/{customerId}")
     Call<CustomerDTO> getCustomerById(@Path("customerId") Long customerId);
+
+    @GET("api/v1/dropdowns/customers")
+    Call<List<DropdownDTO>> getCustomerDropdowns();
 }
\ No newline at end of file
diff --git a/android/app/src/main/java/com/example/petstoremobile/api/PetApi.java b/android/app/src/main/java/com/example/petstoremobile/api/PetApi.java
index f594b8f9..24250c4c 100644
--- a/android/app/src/main/java/com/example/petstoremobile/api/PetApi.java
+++ b/android/app/src/main/java/com/example/petstoremobile/api/PetApi.java
@@ -1,9 +1,12 @@
 package com.example.petstoremobile.api;
 
 import com.example.petstoremobile.dtos.BulkDeleteRequest;
+import com.example.petstoremobile.dtos.DropdownDTO;
 import com.example.petstoremobile.dtos.PageResponse;
 import com.example.petstoremobile.dtos.PetDTO;
 
+import java.util.List;
+
 import okhttp3.MultipartBody;
 import retrofit2.Call;
 import retrofit2.http.Body;
@@ -35,6 +38,12 @@ public interface PetApi {
             @Query("sort") String sort
     );
 
+    @GET("api/v1/dropdowns/customers/{customerId}/pets")
+    Call<List<DropdownDTO>> getCustomerPets(@Path("customerId") Long customerId);
+
+    @GET("api/v1/dropdowns/adoption-pets")
+    Call<List<DropdownDTO>> getAdoptionPets();
+
     // Get pet by id
     @GET("api/v1/pets/{id}")
     Call<PetDTO> getPetById(@Path("id") Long id);
diff --git a/android/app/src/main/java/com/example/petstoremobile/api/StoreApi.java b/android/app/src/main/java/com/example/petstoremobile/api/StoreApi.java
index 9819df22..f71b92b6 100644
--- a/android/app/src/main/java/com/example/petstoremobile/api/StoreApi.java
+++ b/android/app/src/main/java/com/example/petstoremobile/api/StoreApi.java
@@ -18,6 +18,9 @@ public interface StoreApi {
             @Query("page") int page,
             @Query("size") int size);
 
+    @GET("api/v1/dropdowns/stores")
+    Call<List<DropdownDTO>> getStoreDropdowns();
+
     @GET("api/v1/dropdowns/stores/{storeId}/employees")
     Call<List<DropdownDTO>> getStoreEmployees(@Path("storeId") Long storeId);
 }
diff --git a/android/app/src/main/java/com/example/petstoremobile/fragments/listfragments/detailfragments/AdoptionDetailFragment.java b/android/app/src/main/java/com/example/petstoremobile/fragments/listfragments/detailfragments/AdoptionDetailFragment.java
index 687a6a7c..0beeaa7e 100644
--- a/android/app/src/main/java/com/example/petstoremobile/fragments/listfragments/detailfragments/AdoptionDetailFragment.java
+++ b/android/app/src/main/java/com/example/petstoremobile/fragments/listfragments/detailfragments/AdoptionDetailFragment.java
@@ -41,9 +41,9 @@ public class AdoptionDetailFragment extends Fragment {
     private long preselectedStoreId = -1;
     private long preselectedEmployeeId = -1;
 
-    private List<PetDTO> petList = new ArrayList<>();
-    private List<CustomerDTO> customerList = new ArrayList<>();
-    private List<StoreDTO> storeList = new ArrayList<>();
+    private List<DropdownDTO> petList = new ArrayList<>();
+    private List<DropdownDTO> customerList = new ArrayList<>();
+    private List<DropdownDTO> storeList = new ArrayList<>();
     private List<UserDTO> employeeList = new ArrayList<>();
 
     private final String[] STATUSES = {"Pending", "Completed", "Cancelled"};
@@ -126,9 +126,9 @@ public class AdoptionDetailFragment extends Fragment {
      * Loads the list of pets from the API.
      */
     private void loadPets() {
-        petViewModel.getAllPets(0, 200, null, null, null, null, null, "petName").observe(getViewLifecycleOwner(), resource -> {
+        petViewModel.getAdoptionPets().observe(getViewLifecycleOwner(), resource -> {
             if (resource.status == Resource.Status.SUCCESS && resource.data != null) {
-                petList = resource.data.getContent();
+                petList = resource.data;
                 refreshPetSpinner();
             }
         });
@@ -139,17 +139,17 @@ public class AdoptionDetailFragment extends Fragment {
      */
     private void refreshPetSpinner() {
         SpinnerUtils.populateSpinner(requireContext(), binding.spinnerAdoptionPet, petList,
-                PetDTO::getPetName, "-- Select Pet --",
-                preselectedPetId, PetDTO::getPetId);
+                DropdownDTO::getLabel, "-- Select Pet --",
+                preselectedPetId, DropdownDTO::getId);
     }
 
     /**
      * Loads the list of customers from the API.
      */
     private void loadCustomers() {
-        customerViewModel.getAllCustomers(0, 200).observe(getViewLifecycleOwner(), resource -> {
+        customerViewModel.getCustomerDropdowns().observe(getViewLifecycleOwner(), resource -> {
             if (resource.status == Resource.Status.SUCCESS && resource.data != null) {
-                customerList = resource.data.getContent();
+                customerList = resource.data;
                 refreshCustomerSpinner();
             }
         });
@@ -160,18 +160,18 @@ public class AdoptionDetailFragment extends Fragment {
      */
     private void refreshCustomerSpinner() {
         SpinnerUtils.populateSpinner(requireContext(), binding.spinnerAdoptionCustomer, customerList,
-                item -> item.getFirstName() + " " + item.getLastName(),
+                DropdownDTO::getLabel,
                 "-- Select Customer --",
-                preselectedCustomerId, CustomerDTO::getCustomerId);
+                preselectedCustomerId, DropdownDTO::getId);
     }
 
     /**
      * Loads the list of stores from the API.
      */
     private void loadStores() {
-        storeViewModel.getAllStores(0, 200).observe(getViewLifecycleOwner(), resource -> {
+        storeViewModel.getStoreDropdowns().observe(getViewLifecycleOwner(), resource -> {
             if (resource.status == Resource.Status.SUCCESS && resource.data != null) {
-                storeList = resource.data.getContent();
+                storeList = resource.data;
                 refreshStoreSpinner();
             }
         });
@@ -182,8 +182,8 @@ public class AdoptionDetailFragment extends Fragment {
      */
     private void refreshStoreSpinner() {
         SpinnerUtils.populateSpinner(requireContext(), binding.spinnerAdoptionStore, storeList,
-                StoreDTO::getStoreName, "-- Select Store --",
-                preselectedStoreId, StoreDTO::getStoreId);
+                DropdownDTO::getLabel, "-- Select Store --",
+                preselectedStoreId, DropdownDTO::getId);
     }
 
     /**
@@ -283,9 +283,9 @@ public class AdoptionDetailFragment extends Fragment {
             }
         }
 
-        CustomerDTO customer = customerList.get(binding.spinnerAdoptionCustomer.getSelectedItemPosition() - 1);
-        PetDTO pet           = petList.get(binding.spinnerAdoptionPet.getSelectedItemPosition() - 1);
-        StoreDTO store       = storeList.get(binding.spinnerAdoptionStore.getSelectedItemPosition() - 1);
+        DropdownDTO customer = customerList.get(binding.spinnerAdoptionCustomer.getSelectedItemPosition() - 1);
+        DropdownDTO pet      = petList.get(binding.spinnerAdoptionPet.getSelectedItemPosition() - 1);
+        DropdownDTO store    = storeList.get(binding.spinnerAdoptionStore.getSelectedItemPosition() - 1);
         
         Long employeeId = null;
         if (binding.spinnerAdoptionEmployee.getSelectedItemPosition() > 0) {
@@ -295,10 +295,10 @@ public class AdoptionDetailFragment extends Fragment {
         String status        = STATUSES[binding.spinnerAdoptionStatus.getSelectedItemPosition()];
 
         AdoptionDTO dto = new AdoptionDTO(
-                pet.getPetId(),
-                customer.getCustomerId(),
+                pet.getId(),
+                customer.getId(),
                 employeeId,
-                store.getStoreId(),
+                store.getId(),
                 date,
                 status,
                 fee
diff --git a/android/app/src/main/java/com/example/petstoremobile/fragments/listfragments/detailfragments/AppointmentDetailFragment.java b/android/app/src/main/java/com/example/petstoremobile/fragments/listfragments/detailfragments/AppointmentDetailFragment.java
index 285f0d60..1d25207a 100644
--- a/android/app/src/main/java/com/example/petstoremobile/fragments/listfragments/detailfragments/AppointmentDetailFragment.java
+++ b/android/app/src/main/java/com/example/petstoremobile/fragments/listfragments/detailfragments/AppointmentDetailFragment.java
@@ -43,10 +43,10 @@ public class AppointmentDetailFragment extends Fragment {
     private long preselectedStoreId = -1;
     private long preselectedStaffId = -1;
 
-    private List<PetDTO> petList = new ArrayList<>();
+    private List<DropdownDTO> petList = new ArrayList<>();
     private List<ServiceDTO> serviceList = new ArrayList<>();
-    private List<CustomerDTO> customerList = new ArrayList<>();
-    private List<StoreDTO> storeList = new ArrayList<>();
+    private List<DropdownDTO> customerList = new ArrayList<>();
+    private List<DropdownDTO> storeList = new ArrayList<>();
     private List<DropdownDTO> staffList = new ArrayList<>();
 
     private final Integer[] HOURS = {9,10,11,12,13,14,15,16,17};
@@ -113,8 +113,8 @@ public class AppointmentDetailFragment extends Fragment {
             @Override
             public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
                 if (position > 0 && position <= customerList.size()) {
-                    CustomerDTO selectedCustomer = customerList.get(position - 1);
-                    loadPets(selectedCustomer.getCustomerId());
+                    DropdownDTO selectedCustomer = customerList.get(position - 1);
+                    loadPets(selectedCustomer.getId());
                 } else {
                     petList.clear();
                     refreshPetSpinner();
@@ -130,8 +130,8 @@ public class AppointmentDetailFragment extends Fragment {
             @Override
             public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
                 if (position > 0 && position <= storeList.size()) {
-                    StoreDTO selectedStore = storeList.get(position - 1);
-                    loadStaff(selectedStore.getStoreId());
+                    DropdownDTO selectedStore = storeList.get(position - 1);
+                    loadStaff(selectedStore.getId());
                 } else {
                     staffList.clear();
                     refreshStaffSpinner();
@@ -172,9 +172,9 @@ public class AppointmentDetailFragment extends Fragment {
      * Loads the list of pets from the ViewModel, filtered by customerId.
      */
     private void loadPets(Long customerId) {
-        petViewModel.getAllPets(0, 200, null, null, null, null, customerId, "petName").observe(getViewLifecycleOwner(), resource -> {
+        petViewModel.getCustomerPets(customerId).observe(getViewLifecycleOwner(), resource -> {
             if (resource.status == Resource.Status.SUCCESS && resource.data != null) {
-                petList = resource.data.getContent();
+                petList = resource.data;
                 refreshPetSpinner();
             }
         });
@@ -185,8 +185,8 @@ public class AppointmentDetailFragment extends Fragment {
      */
     private void refreshPetSpinner() {
         SpinnerUtils.populateSpinner(requireContext(), binding.spinnerPet, petList,
-                PetDTO::getPetName, "-- Select Pet --",
-                preselectedPetId, PetDTO::getPetId);
+                DropdownDTO::getLabel, "-- Select Pet --",
+                preselectedPetId, DropdownDTO::getId);
     }
 
     /**
@@ -214,9 +214,9 @@ public class AppointmentDetailFragment extends Fragment {
      * Loads the list of customers from the API.
      */
     private void loadCustomers() {
-        customerViewModel.getAllCustomers(0, 200).observe(getViewLifecycleOwner(), resource -> {
+        customerViewModel.getCustomerDropdowns().observe(getViewLifecycleOwner(), resource -> {
             if (resource.status == Resource.Status.SUCCESS && resource.data != null) {
-                customerList = resource.data.getContent();
+                customerList = resource.data;
                 refreshCustomerSpinner();
             }
         });
@@ -227,18 +227,18 @@ public class AppointmentDetailFragment extends Fragment {
      */
     private void refreshCustomerSpinner() {
         SpinnerUtils.populateSpinner(requireContext(), binding.spinnerCustomer, customerList,
-                item -> item.getFirstName() + " " + item.getLastName(),
+                DropdownDTO::getLabel,
                 "-- Select Customer --",
-                preselectedCustomerId, CustomerDTO::getCustomerId);
+                preselectedCustomerId, DropdownDTO::getId);
     }
 
     /**
      * Loads the list of stores from the API.
      */
     private void loadStores() {
-        storeViewModel.getAllStores(0, 50).observe(getViewLifecycleOwner(), resource -> {
+        storeViewModel.getStoreDropdowns().observe(getViewLifecycleOwner(), resource -> {
             if (resource.status == Resource.Status.SUCCESS && resource.data != null) {
-                storeList = resource.data.getContent();
+                storeList = resource.data;
                 refreshStoreSpinner();
             }
         });
@@ -249,8 +249,8 @@ public class AppointmentDetailFragment extends Fragment {
      */
     private void refreshStoreSpinner() {
         SpinnerUtils.populateSpinner(requireContext(), binding.spinnerStore, storeList,
-                StoreDTO::getStoreName, "-- Select Store --",
-                preselectedStoreId, StoreDTO::getStoreId);
+                DropdownDTO::getLabel, "-- Select Store --",
+                preselectedStoreId, DropdownDTO::getId);
     }
 
     /**
@@ -395,9 +395,9 @@ public class AppointmentDetailFragment extends Fragment {
             Toast.makeText(getContext(), "Select a date", Toast.LENGTH_SHORT).show(); return;
         }
 
-        CustomerDTO customer = customerList.get(binding.spinnerCustomer.getSelectedItemPosition() - 1);
-        StoreDTO store       = storeList.get(binding.spinnerStore.getSelectedItemPosition() - 1);
-        PetDTO pet           = petList.get(binding.spinnerPet.getSelectedItemPosition() - 1);
+        DropdownDTO customer = customerList.get(binding.spinnerCustomer.getSelectedItemPosition() - 1);
+        DropdownDTO store    = storeList.get(binding.spinnerStore.getSelectedItemPosition() - 1);
+        DropdownDTO pet      = petList.get(binding.spinnerPet.getSelectedItemPosition() - 1);
         ServiceDTO service   = serviceList.get(binding.spinnerService.getSelectedItemPosition() - 1);
         
         Long employeeId = null;
@@ -440,14 +440,14 @@ public class AppointmentDetailFragment extends Fragment {
 
         // Build DTO with all required IDs
         AppointmentDTO dto = new AppointmentDTO(
-                customer.getCustomerId(),
-                store.getStoreId(),
+                customer.getId(),
+                store.getId(),
                 service.getServiceId(),
                 employeeId,
                 date,
                 time,
                 status,
-                pet.getPetId()
+                pet.getId()
         );
 
         androidx.lifecycle.Observer<Resource<AppointmentDTO>> observer = resource -> {
diff --git a/android/app/src/main/java/com/example/petstoremobile/fragments/listfragments/detailfragments/InventoryDetailFragment.java b/android/app/src/main/java/com/example/petstoremobile/fragments/listfragments/detailfragments/InventoryDetailFragment.java
index 7a729b94..640b99b9 100644
--- a/android/app/src/main/java/com/example/petstoremobile/fragments/listfragments/detailfragments/InventoryDetailFragment.java
+++ b/android/app/src/main/java/com/example/petstoremobile/fragments/listfragments/detailfragments/InventoryDetailFragment.java
@@ -14,6 +14,7 @@ import androidx.lifecycle.ViewModelProvider;
 import androidx.navigation.fragment.NavHostFragment;
 
 import com.example.petstoremobile.databinding.FragmentInventoryDetailBinding;
+import com.example.petstoremobile.dtos.DropdownDTO;
 import com.example.petstoremobile.dtos.InventoryDTO;
 import com.example.petstoremobile.dtos.ProductDTO;
 import com.example.petstoremobile.dtos.StoreDTO;
@@ -46,7 +47,7 @@ public class InventoryDetailFragment extends Fragment {
     private long preselectedStoreId = -1;
     private long preselectedProductId = -1;
 
-    private List<StoreDTO> storeList = new ArrayList<>();
+    private List<DropdownDTO> storeList = new ArrayList<>();
     private List<ProductDTO> productList = new ArrayList<>();
 
     /**
@@ -103,9 +104,9 @@ public class InventoryDetailFragment extends Fragment {
      * Loads the list of stores for the spinner.
      */
     private void loadStores() {
-        storeViewModel.getAllStores(0, 100).observe(getViewLifecycleOwner(), resource -> {
+        storeViewModel.getStoreDropdowns().observe(getViewLifecycleOwner(), resource -> {
             if (resource.status == Resource.Status.SUCCESS && resource.data != null) {
-                storeList = resource.data.getContent();
+                storeList = resource.data;
                 refreshStoreSpinner();
             }
         });
@@ -113,8 +114,8 @@ public class InventoryDetailFragment extends Fragment {
 
     private void refreshStoreSpinner() {
         SpinnerUtils.populateSpinner(requireContext(), binding.spinnerInventoryStore, storeList,
-                StoreDTO::getStoreName, "-- Select Store --",
-                preselectedStoreId, StoreDTO::getStoreId);
+                DropdownDTO::getLabel, "-- Select Store --",
+                preselectedStoreId, DropdownDTO::getId);
     }
 
     /**
@@ -199,10 +200,10 @@ public class InventoryDetailFragment extends Fragment {
         }
 
         int quantity = Integer.parseInt(binding.etQuantity.getText().toString().trim());
-        StoreDTO store = storeList.get(binding.spinnerInventoryStore.getSelectedItemPosition() - 1);
+        DropdownDTO store = storeList.get(binding.spinnerInventoryStore.getSelectedItemPosition() - 1);
         ProductDTO product = productList.get(binding.spinnerInventoryProduct.getSelectedItemPosition() - 1);
 
-        InventoryDTO request = new InventoryDTO(product.getProdId(), store.getStoreId(), quantity);
+        InventoryDTO request = new InventoryDTO(product.getProdId(), store.getId(), quantity);
         setButtonsEnabled(false);
 
         if (isEditing) {
diff --git a/android/app/src/main/java/com/example/petstoremobile/fragments/listfragments/detailfragments/PetDetailFragment.java b/android/app/src/main/java/com/example/petstoremobile/fragments/listfragments/detailfragments/PetDetailFragment.java
index ea08d16d..e45a93b2 100644
--- a/android/app/src/main/java/com/example/petstoremobile/fragments/listfragments/detailfragments/PetDetailFragment.java
+++ b/android/app/src/main/java/com/example/petstoremobile/fragments/listfragments/detailfragments/PetDetailFragment.java
@@ -18,9 +18,8 @@ import android.widget.Toast;
 
 import com.example.petstoremobile.R;
 import com.example.petstoremobile.databinding.FragmentPetDetailBinding;
-import com.example.petstoremobile.dtos.CustomerDTO;
+import com.example.petstoremobile.dtos.DropdownDTO;
 import com.example.petstoremobile.dtos.PetDTO;
-import com.example.petstoremobile.dtos.StoreDTO;
 import com.example.petstoremobile.utils.ActivityLogger;
 import com.example.petstoremobile.utils.DialogUtils;
 import com.example.petstoremobile.utils.InputValidator;
@@ -49,8 +48,8 @@ public class PetDetailFragment extends Fragment {
     private PetViewModel viewModel;
     private CustomerViewModel customerViewModel;
     private StoreViewModel storeViewModel;
-    private List<CustomerDTO> customerList = new ArrayList<>();
-    private List<StoreDTO> storeList = new ArrayList<>();
+    private List<DropdownDTO> customerList = new ArrayList<>();
+    private List<DropdownDTO> storeList = new ArrayList<>();
     private Long selectedCustomerId = null;
     private Long selectedStoreId = null;
 
@@ -113,14 +112,14 @@ public class PetDetailFragment extends Fragment {
         Long customerId = null;
         int customerPos = binding.spinnerCustomer.getSelectedItemPosition();
         if (customerPos > 0) { // 0 means no customer for pet
-            customerId = customerList.get(customerPos - 1).getCustomerId();
+            customerId = customerList.get(customerPos - 1).getId();
         }
 
         // Get selected store
         Long storeId = null;
         int storePos = binding.spinnerStore.getSelectedItemPosition();
         if (storePos > 0) {
-            storeId = storeList.get(storePos - 1).getStoreId();
+            storeId = storeList.get(storePos - 1).getId();
         }
 
         // Validation: If status is Available, a store must be selected
@@ -277,9 +276,9 @@ public class PetDetailFragment extends Fragment {
      * Fetches the list of customers and populates the spinner.
      */
     private void loadCustomers() {
-        customerViewModel.getAllCustomers(0, 1000).observe(getViewLifecycleOwner(), resource -> {
+        customerViewModel.getCustomerDropdowns().observe(getViewLifecycleOwner(), resource -> {
             if (resource != null && resource.status == Resource.Status.SUCCESS && resource.data != null) {
-                customerList = resource.data.getContent();
+                customerList = resource.data;
                 updateCustomerSpinnerSelection();
             }
         });
@@ -289,9 +288,9 @@ public class PetDetailFragment extends Fragment {
      * Fetches the list of stores and populates the spinner.
      */
     private void loadStores() {
-        storeViewModel.getAllStores(0, 1000).observe(getViewLifecycleOwner(), resource -> {
+        storeViewModel.getStoreDropdowns().observe(getViewLifecycleOwner(), resource -> {
             if (resource != null && resource.status == Resource.Status.SUCCESS && resource.data != null) {
-                storeList = resource.data.getContent();
+                storeList = resource.data;
                 updateStoreSpinnerSelection();
             }
         });
@@ -305,10 +304,10 @@ public class PetDetailFragment extends Fragment {
                 requireContext(),
                 binding.spinnerCustomer,
                 customerList,
-                CustomerDTO::getFullName,
+                DropdownDTO::getLabel,
                 "No Owner",
                 selectedCustomerId,
-                CustomerDTO::getCustomerId
+                DropdownDTO::getId
         );
     }
 
@@ -320,10 +319,10 @@ public class PetDetailFragment extends Fragment {
                 requireContext(),
                 binding.spinnerStore,
                 storeList,
-                StoreDTO::getStoreName,
+                DropdownDTO::getLabel,
                 "None",
                 selectedStoreId,
-                StoreDTO::getStoreId
+                DropdownDTO::getId
         );
     }
 
@@ -379,4 +378,4 @@ public class PetDetailFragment extends Fragment {
             ((TextView) selectedView).setError(null);
         }
     }
-}
+}
\ No newline at end of file
diff --git a/android/app/src/main/java/com/example/petstoremobile/fragments/listfragments/detailfragments/SaleDetailFragment.java b/android/app/src/main/java/com/example/petstoremobile/fragments/listfragments/detailfragments/SaleDetailFragment.java
index 40c7896b..0be0120c 100644
--- a/android/app/src/main/java/com/example/petstoremobile/fragments/listfragments/detailfragments/SaleDetailFragment.java
+++ b/android/app/src/main/java/com/example/petstoremobile/fragments/listfragments/detailfragments/SaleDetailFragment.java
@@ -31,8 +31,8 @@ public class SaleDetailFragment extends Fragment {
     private boolean viewOnly = false;
     private long saleId = -1;
 
-    private List<StoreDTO> storeList = new ArrayList<>();
-    private List<CustomerDTO> customerList = new ArrayList<>();
+    private List<DropdownDTO> storeList = new ArrayList<>();
+    private List<DropdownDTO> customerList = new ArrayList<>();
     private List<ProductDTO> productList = new ArrayList<>();
     private List<SaleDTO.SaleItemDTO> cartItems = new ArrayList<>();
 
@@ -104,30 +104,24 @@ public class SaleDetailFragment extends Fragment {
     }
 
     private void loadStores() {
-        storeViewModel.getAllStores(0, 50).observe(getViewLifecycleOwner(), resource -> {
+        storeViewModel.getStoreDropdowns().observe(getViewLifecycleOwner(), resource -> {
             if (resource != null && resource.status == Resource.Status.SUCCESS && resource.data != null) {
-                storeList = resource.data.getContent();
+                storeList = resource.data;
                 if (binding != null) {
                     SpinnerUtils.populateSpinner(requireContext(), binding.spinnerSaleStore, storeList,
-                            StoreDTO::getStoreName, "-- Select Store --", -1L, StoreDTO::getStoreId);
-                }
-            } else if (storeList.isEmpty()) {
-                storeList = Collections.singletonList(new StoreDTO(1L, "Downtown Branch"));
-                if (binding != null) {
-                    SpinnerUtils.populateSpinner(requireContext(), binding.spinnerSaleStore, storeList,
-                            StoreDTO::getStoreName, "-- Select Store --", -1L, StoreDTO::getStoreId);
+                            DropdownDTO::getLabel, "-- Select Store --", -1L, DropdownDTO::getId);
                 }
             }
         });
     }
 
     private void loadCustomers() {
-        customerViewModel.getAllCustomers(0, 200).observe(getViewLifecycleOwner(), resource -> {
+        customerViewModel.getCustomerDropdowns().observe(getViewLifecycleOwner(), resource -> {
             if (resource != null && resource.status == Resource.Status.SUCCESS && resource.data != null) {
-                customerList = resource.data.getContent();
+                customerList = resource.data;
                 if (binding != null) {
                     SpinnerUtils.populateSpinner(requireContext(), binding.spinnerSaleCustomer, customerList,
-                            CustomerDTO::getFullName, "-- No Customer --", -1L, CustomerDTO::getCustomerId);
+                            DropdownDTO::getLabel, "-- No Customer --", -1L, DropdownDTO::getId);
                 }
             }
         });
@@ -275,18 +269,18 @@ public class SaleDetailFragment extends Fragment {
             return;
         }
 
-        StoreDTO store = storeList.get(binding.spinnerSaleStore.getSelectedItemPosition() - 1);
+        DropdownDTO store = storeList.get(binding.spinnerSaleStore.getSelectedItemPosition() - 1);
         String payment = PAYMENT_METHODS[binding.spinnerPaymentMethod.getSelectedItemPosition()];
 
         // Optional customer
         Long customerId = null;
         if (binding.spinnerSaleCustomer.getSelectedItemPosition() > 0) {
             customerId = customerList.get(binding.spinnerSaleCustomer.getSelectedItemPosition() - 1)
-                    .getCustomerId();
+                    .getId();
         }
 
         SaleDTO dto = new SaleDTO(
-                store.getStoreId(),
+                store.getId(),
                 payment,
                 cartItems,
                 false,
diff --git a/android/app/src/main/java/com/example/petstoremobile/repositories/CustomerRepository.java b/android/app/src/main/java/com/example/petstoremobile/repositories/CustomerRepository.java
index 4006ae69..9fa9d2e6 100644
--- a/android/app/src/main/java/com/example/petstoremobile/repositories/CustomerRepository.java
+++ b/android/app/src/main/java/com/example/petstoremobile/repositories/CustomerRepository.java
@@ -4,9 +4,12 @@ import androidx.lifecycle.LiveData;
 
 import com.example.petstoremobile.api.CustomerApi;
 import com.example.petstoremobile.dtos.CustomerDTO;
+import com.example.petstoremobile.dtos.DropdownDTO;
 import com.example.petstoremobile.dtos.PageResponse;
 import com.example.petstoremobile.utils.Resource;
 
+import java.util.List;
+
 import javax.inject.Inject;
 import javax.inject.Singleton;
 
@@ -33,4 +36,11 @@ public class CustomerRepository extends BaseRepository {
     public LiveData<Resource<CustomerDTO>> getCustomerById(Long id) {
         return executeCall(customerApi.getCustomerById(id));
     }
-}
+
+    /**
+     * Retrieves a list of customer dropdowns from the API.
+     */
+    public LiveData<Resource<List<DropdownDTO>>> getCustomerDropdowns() {
+        return executeCall(customerApi.getCustomerDropdowns());
+    }
+}
\ No newline at end of file
diff --git a/android/app/src/main/java/com/example/petstoremobile/repositories/PetRepository.java b/android/app/src/main/java/com/example/petstoremobile/repositories/PetRepository.java
index d49ec00f..623a4daa 100644
--- a/android/app/src/main/java/com/example/petstoremobile/repositories/PetRepository.java
+++ b/android/app/src/main/java/com/example/petstoremobile/repositories/PetRepository.java
@@ -4,10 +4,13 @@ import androidx.lifecycle.LiveData;
 
 import com.example.petstoremobile.api.PetApi;
 import com.example.petstoremobile.dtos.BulkDeleteRequest;
+import com.example.petstoremobile.dtos.DropdownDTO;
 import com.example.petstoremobile.dtos.PageResponse;
 import com.example.petstoremobile.dtos.PetDTO;
 import com.example.petstoremobile.utils.Resource;
 
+import java.util.List;
+
 import javax.inject.Inject;
 import javax.inject.Singleton;
 
@@ -30,6 +33,20 @@ public class PetRepository extends BaseRepository {
         return executeCall(petApi.getAllPets(page, size, query, status, species, storeId, customerId, sort));
     }
 
+    /**
+     * Retrieves a list of pets for a specific customer from the dropdowns API.
+     */
+    public LiveData<Resource<List<DropdownDTO>>> getCustomerPets(Long customerId) {
+        return executeCall(petApi.getCustomerPets(customerId));
+    }
+
+    /**
+     * Retrieves a list of pets available for adoption from the dropdowns API.
+     */
+    public LiveData<Resource<List<DropdownDTO>>> getAdoptionPets() {
+        return executeCall(petApi.getAdoptionPets());
+    }
+
     /**
      * Retrieves a specific pet by its ID from the API.
      */
diff --git a/android/app/src/main/java/com/example/petstoremobile/repositories/StoreRepository.java b/android/app/src/main/java/com/example/petstoremobile/repositories/StoreRepository.java
index 9aa4aa1e..0df93ab1 100644
--- a/android/app/src/main/java/com/example/petstoremobile/repositories/StoreRepository.java
+++ b/android/app/src/main/java/com/example/petstoremobile/repositories/StoreRepository.java
@@ -30,6 +30,13 @@ public class StoreRepository extends BaseRepository {
         return executeCall(storeApi.getAllStores(page, size));
     }
 
+    /**
+     * Retrieves a list of store dropdowns from the API.
+     */
+    public LiveData<Resource<List<DropdownDTO>>> getStoreDropdowns() {
+        return executeCall(storeApi.getStoreDropdowns());
+    }
+
     /**
      * Retrieves a list of employees for a specific store from the dropdowns API.
      */
diff --git a/android/app/src/main/java/com/example/petstoremobile/viewmodels/CustomerViewModel.java b/android/app/src/main/java/com/example/petstoremobile/viewmodels/CustomerViewModel.java
index 5ad7cc76..d916ff75 100644
--- a/android/app/src/main/java/com/example/petstoremobile/viewmodels/CustomerViewModel.java
+++ b/android/app/src/main/java/com/example/petstoremobile/viewmodels/CustomerViewModel.java
@@ -4,10 +4,13 @@ import androidx.lifecycle.LiveData;
 import androidx.lifecycle.ViewModel;
 
 import com.example.petstoremobile.dtos.CustomerDTO;
+import com.example.petstoremobile.dtos.DropdownDTO;
 import com.example.petstoremobile.dtos.PageResponse;
 import com.example.petstoremobile.repositories.CustomerRepository;
 import com.example.petstoremobile.utils.Resource;
 
+import java.util.List;
+
 import javax.inject.Inject;
 
 import dagger.hilt.android.lifecycle.HiltViewModel;
@@ -34,4 +37,11 @@ public class CustomerViewModel extends ViewModel {
     public LiveData<Resource<CustomerDTO>> getCustomerById(Long id) {
         return repository.getCustomerById(id);
     }
-}
+
+    /**
+     * Retrieves a list of customer dropdowns from the repository.
+     */
+    public LiveData<Resource<List<DropdownDTO>>> getCustomerDropdowns() {
+        return repository.getCustomerDropdowns();
+    }
+}
\ No newline at end of file
diff --git a/android/app/src/main/java/com/example/petstoremobile/viewmodels/PetViewModel.java b/android/app/src/main/java/com/example/petstoremobile/viewmodels/PetViewModel.java
index 6b5f6025..76770392 100644
--- a/android/app/src/main/java/com/example/petstoremobile/viewmodels/PetViewModel.java
+++ b/android/app/src/main/java/com/example/petstoremobile/viewmodels/PetViewModel.java
@@ -4,6 +4,7 @@ import androidx.lifecycle.LiveData;
 import androidx.lifecycle.ViewModel;
 
 import com.example.petstoremobile.dtos.BulkDeleteRequest;
+import com.example.petstoremobile.dtos.DropdownDTO;
 import com.example.petstoremobile.dtos.PageResponse;
 import com.example.petstoremobile.dtos.PetDTO;
 import com.example.petstoremobile.repositories.PetRepository;
@@ -32,6 +33,20 @@ public class PetViewModel extends ViewModel {
         return repository.getAllPets(page, size, query, status, species, storeId, customerId, sort);
     }
 
+    /**
+     * Retrieves a list of pets for a specific customer from the repository.
+     */
+    public LiveData<Resource<List<DropdownDTO>>> getCustomerPets(Long customerId) {
+        return repository.getCustomerPets(customerId);
+    }
+
+    /**
+     * Retrieves a list of pets available for adoption from the repository.
+     */
+    public LiveData<Resource<List<DropdownDTO>>> getAdoptionPets() {
+        return repository.getAdoptionPets();
+    }
+
     /**
      * Retrieves a single pet by its ID.
      */
diff --git a/android/app/src/main/java/com/example/petstoremobile/viewmodels/StoreViewModel.java b/android/app/src/main/java/com/example/petstoremobile/viewmodels/StoreViewModel.java
index 5fac8de4..0388c646 100644
--- a/android/app/src/main/java/com/example/petstoremobile/viewmodels/StoreViewModel.java
+++ b/android/app/src/main/java/com/example/petstoremobile/viewmodels/StoreViewModel.java
@@ -31,6 +31,13 @@ public class StoreViewModel extends ViewModel {
         return repository.getAllStores(page, size);
     }
 
+    /**
+     * Fetches a list of store dropdowns from the repository.
+     */
+    public LiveData<Resource<List<DropdownDTO>>> getStoreDropdowns() {
+        return repository.getStoreDropdowns();
+    }
+
     /**
      * Fetches a list of employees for a specific store.
      */