Years ago, I was working doing some repairs on a house in the Detroit Ghetto. The residents were several generations of welfare rats and a drug dealer son. The drug dealer owned a pit bull that he left at home.
He was gone all day. The pit bull got up, walked downstairs and out the back door, ate the legs off a dog walking through the back yard, then went back upstairs and went to sleep. The matriarch welfare rat got all freaked out that the dog was going to eat the small welfare rats in training who were just toddlers. (Sorry, multiple generations living on the taxpayers dollar get my goat)
I offered to use the drug dealers gun that he had left in his room to dispatch the dog, which we proceeded to do.
Bummer.
Quite a story. Sounds like you might have others.