The Ancient Horse
What is an herbivore?
An herbivore is an animal that eats plant life exclusively. As grazing animals, horses are herbivores. This distinction makes the horse a prey animal. Animals that hunt and eat horses are considered predators. Being an animal of prey contributes greatly to the horse's overall behavior and endows it with the natural speed and athleticism necessary to flee from danger.
Changing habitat from swamplands to dry savannahs caused the horse to evolve from a creature with multiple toes to one with a single toe, which later became a hoof and which is better adapted to roaming dry ground. We can thank the Pliocene epoch for
Partway up the horse's leg, past the knee on the inside, is what seems to be a callused piece of skin, usually around the size of two quarters. Called the chestnut, this is said to be what remains of the first of three toes the horse lost during its evolution. The two other toe vestiges can be found as a hard nodule behind the fetlock.
The evolution from