Books like Smoky the Cow Horse

Smoky knows only one way of life: freedom. Living on the open range, he is free to go where he wants and do what he wants. And being a smart colt, he learns what he must in order to survive. He can beat any enemy whether it be a rattlesnake or a hungry wolf. He is as much a part of the Wild West as it is of him, and Smokey can't imagine anything else.But then he comes across a new enemy, one that walks on two legs and makes funny sounds. Smoky can't beat this enemy like he has all the others. But does he really want to beat it? Or could giving up some of his freedom mean getting something else in return that's even more valuable?