Board Thread:Naruto Discussions/@comment-25228549-20140821104935/@comment-142748-20140824063559

The correct term is Ushi-Onna. Heh, Gyuki has the same name as the Ushi-Onna in legend! Bet he'd also chill out with the Gyuki from Nurahiyon no Mago!

All joking aside, Kishimoto did give them enough traits to differentiate between the sexes.