an ancestor of the horse
The oligohippus is an early ancestor to the modern day horse. In the beginning of the oligohippus existence they ate from the forest floor, as time went on and grass began to appear, their diet changed to eating grass.
The Oligohippus was founded about 20 million years ago. It had a total of three toes, but only the center toe was functional.
it lived in a hole with a bole