You wanted opinions and so I'll give you mine. If you love that dog, and your father is truly planning on such abuse, you should do what is best for that dog and start looking for another home for him/her. That is not only inexcusable, but it's downright disgusting that someone would do that to an animal. If your father is planning on doing that, it does show that he knows little enough about the proper treatment of animals and he should not have an animal in his care until he learns more about it.

Do you love your dog enough to "set it free" into another home where it will be treated the way it deserves by owners who love and cherish it, and who would never, ever let such a thing happen to it? Maybe you should think about that, hard as it may be.