That's a shame about your dog. And, you know, you're right, there seems to be a lot of dogs with tumors. It wouldn't surprise me one bit to discover that the stuff they put in dog food is the culprit. Look, the food produced for US humans is loaded with chemicals sprayed on it and, antibiotics and steroids injected into it.
My granddaughter's boyfriend hunts nutria for the bounty during winter. If you are serious, email me and I'll hook you up with him for when he starts shooting them firstname.lastname@example.org
Btw brother, I was being a little facetious about you feeding your dog wild pork. You certainly have a right to feed your dog whatever you like. There have been
a few dogs raised by my 4 boys and myself that were like part of the family. It was very painful to lose them when that time came.