Do pet dogs ever eat wild animals?

Some do, some don't. I currently have a cattle dog mix who will catch squirrels without even injuring them, but I used to have two terriers who would kill and eat lizards, birds, snakes, mice, rats, etc. Basically anything that would fit in their mouth. I think it depends a lot on the dog, and maybe the breed. Terrier were bred to kill rodents, but cattle dogs are supposed to herd and keep safe the flock. Labs, at least, are bred as retrievers, so it makes sense that he wouldn't eat it.