I have two boder collies. They are bother and sister;good dogs. I've always had dogs: cocker spaniels , labs , a sheppard coon hound mix, a sheltie, and several border collies.My son my daugter in law have a English bulldog and a jack russel terrier. The buldopg is seet but umpredictable in tems of spontaneous aggression; he' older and slowed by arthitis now though.My daughter has a pompnerianian, At times my wife and I wind up keeping all 5. I've met a few people with pit buls who love them for thier friendliness even with other dogs.