This big 70lb boy is friendly toward people and can be selective with other males. He prefers to be the king of his castle, so smaller dogs have been okay, but other large males are not tolerated. When leashed, he will lunge at people, but perhaps it is just to give hugs. He is crate trained, used to sleeping indoors and does alright in a fenced yard. He has not been around kids. He is an energizer bunny that would love to have a hiking/biking buddy.