diff --git a/web/app/appointments/page.js b/web/app/appointments/page.js
index ce90e858..b4dd5cee 100644
--- a/web/app/appointments/page.js
+++ b/web/app/appointments/page.js
@@ -195,6 +195,100 @@ function DatePicker({ value, minDate, onChange }) {
   );
 }
 
+function AddPetModal({ token, onClose, onAdded }) {
+  const [petName, setPetName] = useState("");
+  const [species, setSpecies] = useState("");
+  const [breed, setBreed] = useState("");
+  const [submitting, setSubmitting] = useState(false);
+  const [petError, setPetError] = useState(null);
+
+  async function handleSubmit(e) {
+    e.preventDefault();
+    setPetError(null);
+    setSubmitting(true);
+
+    try {
+      const res = await fetch(`${API_BASE}/api/v1/my-pets`, {
+        method: "POST",
+        headers: {
+          "Content-Type": "application/json",
+          Authorization: `Bearer ${token}`,
+        },
+        body: JSON.stringify({ petName, species, breed: breed || null }),
+      });
+
+      if (!res.ok) {
+        const data = await res.json().catch(() => null);
+        throw new Error(data?.message || `Request failed (${res.status})`);
+      }
+
+      onAdded();
+      onClose();
+    }
+
+    catch (err) {
+      setPetError(err.message);
+    }
+
+    finally {
+      setSubmitting(false);
+    }
+  }
+
+  return (
+    <div className="appt-modal-overlay" onClick={onClose}>
+      <div className="appt-modal" onClick={(e) => e.stopPropagation()}>
+        <h3 className="profile-pet-form-title">Add a New Pet</h3>
+        {petError && <div className="appt-error">{petError}</div>}
+        <form onSubmit={handleSubmit}>
+          <label className="appt-label">
+            Name
+            <input
+              className="appt-input"
+              type="text"
+              value={petName}
+              onChange={(e) => setPetName(e.target.value)}
+              required
+              maxLength={50}
+            />
+          </label>
+          <label className="appt-label">
+            Species
+            <input
+              className="appt-input"
+              type="text"
+              value={species}
+              onChange={(e) => setSpecies(e.target.value)}
+              required
+              maxLength={50}
+              placeholder="e.g. Dog, Cat, Bird"
+            />
+          </label>
+          <label className="appt-label">
+            Breed (optional)
+            <input
+              className="appt-input"
+              type="text"
+              value={breed}
+              onChange={(e) => setBreed(e.target.value)}
+              maxLength={50}
+              placeholder="e.g. Golden Retriever"
+            />
+          </label>
+          <div className="profile-pet-form-actions">
+            <button type="submit" className="appt-submit-btn" disabled={submitting}>
+              {submitting ? "Saving..." : "Add Pet"}
+            </button>
+            <button type="button" className="profile-pet-cancel-btn" onClick={onClose}>
+              Cancel
+            </button>
+          </div>
+        </form>
+      </div>
+    </div>
+  );
+}
+
 function AppointmentsPage() {
   const { user, token, loading: authLoading } = useAuth();
   const router = useRouter();
@@ -224,6 +318,8 @@ function AppointmentsPage() {
   const [appointments, setAppointments] = useState([]);
   const [loadingAppointments, setLoadingAppointments] = useState(false);
 
+  const [showAddPetModal, setShowAddPetModal] = useState(false);
+
 const canBookAppointments = user?.role === "CUSTOMER" || user?.role === "ADMIN";
 
   useEffect(() => {
@@ -234,6 +330,16 @@ const canBookAppointments = user?.role === "CUSTOMER" || user?.role === "ADMIN";
 
   }, [authLoading, user, router, preselectedPetId]);
 
+  const loadCustomerPets = useCallback(() => {
+    if (!token || !canBookAppointments) return;
+    fetch(`${API_BASE}/api/v1/my-pets`, {
+      headers: { Authorization: `Bearer ${token}` },
+    })
+      .then((r) => r.json())
+      .then((data) => setCustomerPets(Array.isArray(data) ? data : []))
+      .catch(() => {});
+  }, [token, canBookAppointments]);
+
   useEffect(() => {
     if (!token) {
       return;
@@ -256,15 +362,8 @@ const canBookAppointments = user?.role === "CUSTOMER" || user?.role === "ADMIN";
       .then((data) => setAllPets(data.content ?? []))
       .catch(() => {});
 
-    if (canBookAppointments) {
-      fetch(`${API_BASE}/api/v1/my-pets`, {
-        headers: { Authorization: `Bearer ${token}` },
-      })
-        .then((r) => r.json())
-        .then((data) => setCustomerPets(Array.isArray(data) ? data : []))
-        .catch(() => {});
-    }
-  }, [token, canBookAppointments]);
+    loadCustomerPets();
+  }, [token, loadCustomerPets]);
 
   useEffect(() => {
     if (didPreselectRef.current) {
@@ -482,10 +581,18 @@ const canBookAppointments = user?.role === "CUSTOMER" || user?.role === "ADMIN";
   const petSectionLabel = isAdoptionService ? "Select a Pet to Adopt" : "Select Pet(s)";
   const noPetsMessage = isAdoptionService
     ? "No pets are currently available for adoption."
-    : "No pets found. Please add your pets in your profile before booking.";
+    : "No pets found on your profile.";
 
   return (
     <main className="appt-page">
+      {showAddPetModal && (
+        <AddPetModal
+          token={token}
+          onClose={() => setShowAddPetModal(false)}
+          onAdded={loadCustomerPets}
+        />
+      )}
+
       <section className="appt-hero">
         <h1 className="appt-hero-title">Schedule an Appointment</h1>
         <p className="appt-hero-subtitle">Book a service for your pet or schedule a pet adoption visit</p>
@@ -589,6 +696,15 @@ const canBookAppointments = user?.role === "CUSTOMER" || user?.role === "ADMIN";
             {serviceId && (
               <div className="appt-label">
                 <span>{petSectionLabel}</span>
+                {isCustomerPetService && (
+                  <button
+                    type="button"
+                    className="appt-add-pet-btn"
+                    onClick={() => setShowAddPetModal(true)}
+                  >
+                    + Add New Pet
+                  </button>
+                )}
                 {petsToShow.length === 0 ? (
                   <p className="appt-no-slots">{noPetsMessage}</p>
                 ) : isAdoptionService ? (
diff --git a/web/app/globals.css b/web/app/globals.css
index 8571bfeb..43ec07e6 100644
--- a/web/app/globals.css
+++ b/web/app/globals.css
@@ -1351,6 +1351,44 @@ body {
   accent-color: orange;
 }
 
+.appt-add-pet-btn {
+  display: inline-block;
+  margin-top: 0.5rem;
+  padding: 0.4rem 0.85rem;
+  background: none;
+  border: 1.5px solid orange;
+  border-radius: 6px;
+  color: orange;
+  font-size: 0.875rem;
+  font-weight: 600;
+  cursor: pointer;
+  transition: background 0.15s, color 0.15s;
+}
+
+.appt-add-pet-btn:hover {
+  background: orange;
+  color: white;
+}
+
+.appt-modal-overlay {
+  position: fixed;
+  inset: 0;
+  background: rgba(0, 0, 0, 0.45);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  z-index: 1000;
+}
+
+.appt-modal {
+  background: white;
+  border-radius: 12px;
+  padding: 2rem;
+  width: 100%;
+  max-width: 420px;
+  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.18);
+}
+
 .appt-link {
   color: orange;
   font-weight: 600;