Hi I have a recent add to my household. Toby. He is 2 years old , Chi mix. He is definitely a bully. He plays too rough but most of my dogs (who are all small and much older) put him in his place. However , Toby has singled out my Pom Rusty to "attack". Rusty has always been a nervous nell. He paces around and is always sweeping the room with his eyes. I would call him wary. Rusty is terrified and it seems to fuel Toby to attack more often. When I say attack I mean that out of no where Toby will jump on Rusty and grab him by the back of the neck and ear. Its not playing either. Toby will lock down on him and not let go. Rusty cant fight back because Toby has him pinned. There has been blood . So I need help on 2 fronts. What to do to stop Toby from bulling and attacking . And how to get Rusty to stop being so afraid of Toby. Please help if you are a trainer or behaviorist. Thank you.