R.F.
Oh, geez....it doesn't sound like animal cruelty, but if he is breeding them, it does sounds like a puppy farm, which is not responsible. I would call the local animal control/SPCA and see if his lot/land does allow the amount of animals he has on his property. If it's allowed, then at least you know. If not, then you have saved a lot of puppies from being bred irresponsibly.
The police may not have a lot of authority here, unless there is a dog bite, and you DON'T want to wait for that.