We recently adopted a 2 year old chocolate lab/pit bull, Jack. He was neutered 2 weeks ago. We have 2 other basset hounds in the house. For some reason, Jack will act aggressively and seriously attack one of the hounds that is scheduled to be neutered in the next few weeks. This hound now cowers and avoids Jack, and if Jack corners him, Jack will visciously attack him. What can I do? He’s not aggressive towards any of the other dogs.