I am a horse, and I am called a horse, because I am an animal which has been for many

I am a horse, and I am called a horse, because I am an animal which has been for many years under the dominion of horses, and am fitted to bear the burden of a horse, and to perform the service of a horse, from drying of the green hide, to the dying of the dried. I am an animal, which, in my tender days, will be serviceable to the owner of a horse, and which, in my latter days, will serve to support the owner of a horse himself, from the labour of the hoofs, to the profit of the hair.