Hi, I'm so sorry you had this experience with Joe and your Mom. It want Joes fault, but obviously the other irresponsible dog owners fault. I also agree that calling the police might get Joe in trouble. I am not familiar with the laws in the States, but here in Canada, when a dog bites someone, they quarantine the dog for 3 weeks. I wonder if the other dog owner has a license for his dog? Here in Canada not having a dog license, and having your dog off leash are both against the law, and you can be fined for not having them. Maybe you could go through the city bylaws and have him fined for not having his dog on a leash?