by "mutt" i mean unpapered/unregistered dog and by "pure bred" i mean am bully, and i see it on here all the time. also how do you know that they are "pit bull" mixes? did one of there parents have papers from a respected registry and the other not? if not and both parent dogs are unregistered than they are mutts and so are the pups and should not be labeled "pit bull" mixes other wise we start down the slippery slope again.