My dog Koosty is part pit, and who knows what else. Pit is the only part I know for sure. Nobody ever believes he has pit in him, though, because he's just a little taller than a cocker and doesn't have a wide mouth. Doesn't bother me too much, though, because it usually means that those people will actually give him a chance instead of just writing him off as a vicious pit.

The biggest problem I've had is with my family breeding AKC beagles. If they aren't tri-colored, then nobody believes they are purebred beagles, or beagles at all. That one really, really aggravated me as a kid, and still sort of bothers me now.