diff --git a/UAT_PLAYBOOK.md b/UAT_PLAYBOOK.md
index d5887c6..b1e482e 100644
--- a/UAT_PLAYBOOK.md
+++ b/UAT_PLAYBOOK.md
@@ -139,6 +139,9 @@ GroomBook API is a Hono-based REST service (TypeScript/Node.js) powering the pet
 | TC-API-8.5 | Add waitlist entry | POST /api/portal/waitlist with pet and service | 201 Created, waitlist entry created |
 | TC-API-8.6 | View portal invoices | GET /api/portal/invoices | 200 OK, list of client's invoices returned |
 | TC-API-8.7 | Pay multiple invoices | POST /api/portal/invoices/pay-multiple with invoice IDs | 200 OK, payment intent created |
+| TC-API-8.8 | Update pet profile | PATCH /api/portal/pets/{id} with name, breed, groomingNotes | 200 OK, pet updated in portal shape |
+| TC-API-8.9 | Update pet — ownership check | PATCH /api/portal/pets/{id} with session for different client | 403 Forbidden, pet belongs to another client |
+| TC-API-8.10 | Update pet — not found | PATCH /api/portal/pets/{nonexistent-id} | 404 Not Found |
 
 ### 4.9 Waitlist