Cooper strained his leg in the summer, had him to the vet, and had him rest and be quite for a while and he was doing good. The Xray showed nothing other than that. Was doing good but still limping some, but the other day he chased a cat in the yard thru the snow and now he is limping again. Gavea 1/4 of a Tyenol Artristis pill and it seemed to helped. Was wondering if this would hurt him, or is there something else I could give him. Thanks Gloria Flynn