It is known that anthropomorphic duck can successfully crossbreed with
Humans and Dognoses. This leads to some specimens (depending on the level of mammal genome in them) displaying human (or dognose) characteristics. The less obvious consequence is some ducks beginning to grow hair (not just feathers shaped like hair, like
Scrooge McDuck's whiskers), a good example being
Della Duck. More conspicuously, female ducks may have breasts; even more strikingly, many ducks stand as tall as humans and have human-shaped legs (albeit covered with feathers) instead of the short orange legs and webbed feet. Carl Barks occasionally jokingly referred to these "human-like" ducks as "waterfowloids".