THIS MODEL IS EXTRACTED AND CONVERTED FROM WORLD OF WARCRAFT - Property of Blizzard Entertainment. If anyone uses the model, I suggest you clearly add a disclaimer stating that you must own a copy of World of Warcraft to play maps/mods using these models.
I know this topic is some month old but listen: It's not a normal horse, it's the horse from the warlock (Nightmare as you see on the textures) but you are right it has no fire on his head. It would have no fire all over his body if Snaky hadn't add it. It's because the particles get lost with the conversion. So it was the Nigthmare than it lost it particles and looked like a normal horse and then Snaky made it look like again Nightmare because he readded the particles. I hope you understand it now.
his hooves are messed up and it doesnt look like a jightmare. Hes supposed to have fire manes and fire on his hoofs and tail and eyes. And it must be black I think. Looks like a normal horse