Horse

The domestic horse (Equus caballus) is a domesticated species of odd-toed hoofed mammal. Horses evolved over the past 45 to 55 million years from a small multi-toed creature, Eohippus, into a large single-toed animal today. Around 4000 BC, humans started to domesticate horses, and is believed to have been widespread by 3000 BC. Horses are domesticated as a wide variety of things, nowadays, mostly as pets, racing, and drafting.