[Elaltergephah]

I'd just call around, tell vets I have a dog that is human aggressive and I want to pts. No need to go into details about it. Around here they charge $68 and up on average. Fees depend on the disposal of the body. If the vet does disposal it will cost more than if the owner chooses to bury the body themselves.

If he can't manage to get a vet to handle it he could try calling AC and asking them if they will put down an aggressive dog free/low cost. I know my city will put a dog down after a bite for free if the owner will release it to them.