He is basically a nice large, energetic dog with a good personality; he is good with most people, but not with other dogs or cats. we got him as a pup. Definitely playful, but he has shown some sudden aggression to some household family members. I think he needs a place where he can run and expend energy. We have a sizeable back yard for him, but our home is small; roaming the house is difficult. He is well cared for and loved so we are baffled by his aggression. However, he gets along very well the staff at the facility (and vet) we board him at when vacationing.