Machobear is a complete asshole.. if you put him in a crate, he'll bark until you Let him out, if he's outside, he'll bark until you work him, he is absolutely never aggressive to anyone in my house, however, he does give too much attention to a stroller, I'm not sure he knows the differnce., that being said, he will always be either outside in a 10 x 10 kennel, or in a wire cage in the garage.