Equus ferus caballus
A horse is a four-legged mammal. It has a long mane and tail, and the hair is sometimes used for strings on violins.
The horse has hard hooves, made from the same material as out fingernails.
When people think of a horse, they usually think of the wild west and cowboys. Humans ride horses. They use a saddle to sit on the horses' back, and a bridle on their head; there is something called a bit on the end of the bridle that goes into the horses' mouth, which is connected to two long pieces of leather, called reins, that we guide the horse with.
There are many kinds of horse breeds known to man. Here are some of the more well-known one on this Wiki: