It is nothing but an area of the hoof that has a triangular shape.
They can breathe only through their nostrils. This anatomy is known as ‘obligate nasal breathers’.
Together these are called zebroids.
- Zorse is a cross between zebra and horse.
- Zony is a cross between zebra and pony.
- Zonky is a cross between zebra and donkey.
This allows the horse to rotate its ears to 180 degrees.