Q. My dog walks on 3 legs. Got into fight with a cat. The leg is swollen from joint of paw to elbow joint. No visible cuts or abrasions.
DR. ANDREA M. BRODIE, DVM
A. Your dog needs to be seen by a veterinarian. A swelling in this area is very painful as there is no room for swelling to expand... If it is caused by the cat, this could get infected. If your dog sprained the leg, then he will need medications that take the swelling down, or, at worst, surgery to relieve the pressure of the swelling. This condition would be called compartment syndrome.