Sam (Australian Shep) and Danny (Boxer) were the best guards a man could want. Since SAMs passing Danny is a bit overworked and I believe he needs a friend to share in the duties of guarding against meth addicts. Danny is a scary sight at 120lbs, but he would sell his soul for a chicken nugget, possibly even a chocolate covered peanut. I loved Sam dearly (after he turned 3) but don't want another Aussie. So, what would be your choice for a guard dog for a family with kids. I'm not apposed to a biter, I don't like company anyway and prefer you not get out if your car and have to honk or call to gain entrance.