What do veterinarians with dead cows?

This sounds like a riddle! Here's how I would approach it:

* Think about the roles of a veterinarian: They treat animals, diagnose illnesses, and sometimes perform surgeries.

* Consider what "dead cows" implies: It means the cows are no longer alive.

Putting these together, the answer might be:

"Veterinarians deal with dead cows by performing necropsies (animal autopsies) to determine the cause of death."

Let me know if you'd like to try another riddle!