Ushiuchibō (牛打ち坊, Ushiuchibō) is a yokai from Japanese folklore.
These creatures are all black and can never be seen clearly. They are known to sneak into stables at night and make, but they don’t whip the animals. They make small cuts in cows or horses to suck their blood. Unexplained deaths of livestock are usually blamed on the Ushiuchibou.
- Ushiuchibō on Japanese Wikipedia