What do veterinarians do with dead cows?

Usually nothing, and in many cases the veterinarian won't see a dead cow lying around on a farm. The farmer or herd manager will dispose of the body through burial or having the carcass hauled off to a rendering facility.

On occasion, a veterinarian can perform a necropsy on a dead cow to see what it died of. This involves carefully dissecting the cow apart and looking at all the organs and tissues to see what happened; often small samples of the organs are collected and sent to a lab for histopathogloy as well.