I just adopted a three-month old cavachon puppy two days ago and my 12-year old Bichon Frise is NOT happy at all. Matter of fact, he is not only showing teeth and growling constantly whenever the pup is nearby, he has already bit him very hard in the ear! I'm literally worried sick about the safety of my new puppy, and that my older dog is really upset about the new arrival into HIS territory. Any advice would be greatly appreciated! Thanks!