Many know that thoroughbreds and quarter horses are the fastest horse breeds out there. But what other horse breeds are known to be really fast. Learn all about 7 other really fast horse breeds and see them in action. Can you guess who these other 7 fast horse breeds could be? Read the blog post to find out. #fasthorses #fastesthorses #fasthorsebreeds #horsebreeds #quickhorsebreeds #fastesthorse