My neighbor has a large dog. This dog has been in fights with other dogs, it has even broke its chain when it was left outside and chased my 12 year old son up my driveway. I have complained to animal control. I have even took them pictures of this dog on my property right after it attacked a puppy. The neighbor is saying it's another dog doing this. How can I get help before this dog hurts someone. And it WILL.