When I was very young we had a dog named Trixie (and then we later had a dog of the same name because someone at the house was unoriginal) who had previous owners before we got her. Dogs can't talk but they leave clues about their past. My mother told me whenever she held a broom to sweep, Trixie would cower in fear. Making it obvious that it was the tool that the previous people who had Trixie used it to abuse her with. Trixie also passed away herself a year or two after we got her. I don't remember the cause, probably something like heart-worms or some kind of other parasites. My parents were never keen on taking them to the vet. When it came to medical care, the poor dogs were on their own.