It's like any other dog... if it makes the grade, keep it... if not, cull it.
well said ... I once seen a bulldog that anyone would've wanted to own beautiful dog swole well mannered but he wasn't worth a chit when it came to catchin hogs .. i mean he'd get after them an eventually catch them but he wanted to fight more then catch i had 40lbs gyp that would teach him a thing or two ... he is just a yard dog now