We lost Buster right before Christmas (2005)...he was only 2 1/2 years and had seizures where he became very violent and becoming moreso...mostly with our other dogs, but increasingly with us. He was a great dog, and when he was in his right mind, the last thing he would ever do is hurt his friends. He was always very eccentric for a dog, and one of the most interesting characters I've ever known, Canine or Human.