I'll be taking Toto to the vet in a couple of hours because he is in obvious discomfort, limping and not acting like himself at all. I became aware of it when I came home from dinner last night and I had hoped that he would be fine in the morning but that is not the case. I think he injured his left front leg or paw. I can manipulate it but he can't walk on it. I know in the past one of our vets prescribed buprenex but another friend's vet prescribes previcox. Just wondering if anyone on line could share what they have had success with.