
Don't worry Drai, your youngster is submissing to him, a good sign as he is the 'visitor', she has obviously accepted he is top dog. He is just letting her know when he has had enough, he might have a snap if she doesn't take the hint, but it is unusual for an older dog to do damage to a pup.
Hopefully he is neutered as she could come into season at anytime. Just a thought.
Sandra