Bubba comes out of his kennel in hyperdrive! He bounces to each person for some love before he does anything else. He is pretty much non-reactive to other dogs, aslong as they don't get too close. I have no doubt that he could be acclimated to a fur sibling. Heck,he will need one,unless he has an energetic adopter! This gut would be perfect for an active home, but he COULD bowl someone over with his size. That being said, he does settle down quickly. He's actually very versatile, and oh so loving. Though I suspect that Bubba has some OEM, or Old English Mastiff in him, he does have some Fila temperament.This means he will require proper intros to people or animals.