For example, horses, zebras and donkeys are probably descended from an equine (horse-like) kind, since they can interbreed, although the offspring are sterile. Dogs, wolves, coyotes and jackals are probably from a canine (dog-like) kind. All different types of domestic cattle (which are clean animals) are descended from the Aurochs, so there were probably at most seven (or fourteen) domestic cattle aboard. The Aurochs itself may have been descended from a cattle kind including bisons and water buffaloes. We know that tigers and lions can produce hybrids called tigons and ligers, so it is likely that they are descended from the same original kind.