What do veterinarians do with the dead pets?

To be honest, I'm not really sure what the vet does with animal remains here, now I'm very curious. tajnz, not everyone lives in a house with a yard, and pet cemeteries and cremation centers aren't very common. Sometimes you don't have a choice but to leave it to the vet. I would love it if they would cremate the remains and then return them to me, but I doubt that's how its done here.
The opening story was really sad. It would be nice to know that he got his vet license taken from him, but it's a question if he got any punishment at all.