there are absolutely no documented complications from a neuter that would cause that kind of situation.

However, prostate cancer is a well documented killer of old dogs.

Now, I would not recommend elective surgery in a 12 yr old dog regardless. Unless they had reason to believe he was in realistic danger of developing prostate or testicular cancer, there's no particular medical reason i can think of. But, assuming it was a properly performed neuter with no issues arising, it would not have killed your dog.

And it definitely does not make us veterinarians sons of bitches intent on torturing animals because apparently it's all "we're qualified to do".

I appreciate that you were attached to your dog and are angry that he died. However, please do not project your anger and frustration on a very large profession of very dedicated individuals, most of whom are anything but "sons of bitches". I cannot remember the details of your sitation.

It's been a while since we originally had this conversation. But it can be tricky to tell when an animal will decide to leave us. If the veterinarian took the time to convince your mother to neuter a 12 yr old dog, he likely thought there was some good reason. He definitely didn't cackle to himself and think "ha ha I'm going to deprive this dog of his balls until he dies a year from now!! BUWAHAHAHA" I really wish you would take the time to stop and look past your excusably emotional view on this subject, or that you at least would not stoop to insulting my profession.