What is the first ancestor of horse?

The first ancestor of the horse is Eohippus, which means "dawn horse". It lived in North America during the Eocene epoch, about 55 to 50 million years ago. Eohippus was a small, dog-sized animal with four toes on each foot and a long tail. It was a herbivore and ate leaves and fruit. Eohippus is considered to be the first horse because it had theの特徴 that would later evolve into theの特徴 of the modern horse, such as a single toe on each foot and a long neck.