If it's his hips, the first two things that come to mind are legg calve perthes and hip dysplasia. If it's the knees, then luxating patella and/or a torn CCL. He does need xrays and very likely a consult with an ortho surgeon. There is a chance that he is in a lot of pain even if not showing it, so it's pretty important to get a diagnosis soon.
__________________ Crystal  , Ellie May (RIP)  , Rylee Finnegan  , and Gracie Boo🐶 |