Dogs are something else. I had one that would bark and challenge all the dopers that went by and never bothered anybody else. He only weighed 40lbs but with his 4WD he could help me up an embankment by pulling on the leash.. A full size poodle used to play-fight with me and I'd show him a move; the following day he would show me the counter to the move.. smarter than most humans that one was... What a job though, sniffing out Ovarian Cancer.. where does he stick his nose to do that? Does he have to warm it up first?