Charley's cows are the ones that will charge you . . . the bulls will do pretty much whatever you ask them to - which is handy! But they all do whatever the dogs tell them to do, and they've learned it's much easier to do it for Bimmer, who is calm and easy with them, than to irritate me to the point that I get one of the Riot Grrrls . . . who never do anything nice and easy, lol!