A couple of days ago, I noticed our three year old neutered male looked like he was limping. I had a feel all round his leg and shoulder, and he didn't seem to have anything wrong at all (and he didn't get annoyed with me for fiddling about with him). I presumed he had just jumped from something too high and maybe jolted one of his joints, but now he is walking strangely. It's like he's old, his back is a bit arched and his legs are quite stiff. In all other ways, he's fine, eating, pooping, and lolling on the bed for cuddles. His eyes are clear, he's happy to be stroked all over, and he can bend his back the other way when he feels like it. I was just wondering if any of you had come across this behaviour, and if I should trouble the vet, if he seems normal in every other way?