I've known a lot of Boxers in my lifetime, but never really any aggressive ones - until now. I live in a small (30 homes), estate-like development - 22 of us have dogs. We all get together several times a week, rotating homes and basically let our dogs play for an hour or so. Everyone gets along. One of our neighbors has three boxers - an older male and two very young females (one is a year old and one is 5 months) They never come out of their yards, they are never walked. The school bus stop happens to be right in front of their yard. Come bus time, these dogs go insane, puppy and all. Baking madly, growling, spitting, foaming at the mouth, trying to jump the fence. None of us can believe this behavior - even the younger females are unapproachable. Is this a natural temperment in Boxers??? The ones I've always met have been sweet, goofy clowns. ...by the way, the owners of these dogs are very nice, but keep to themselves.