Now either something is extremely abnormal about this horse or this is some special breed we have never seen or even heard of. Jokes apart, it is not a single horse. Yes, that is exactly the truth. There are two horses actually. Since there is a barrier in front, it appears as if there is only one horse stretched abnormally from the center. Of course if you look at this illusion from some other angle, it will appear different than this. Also, if the horse would have raised his head, it would have not appeared like this. So a job well done by the photographer.