I can never have a simple explanation for my images, can I? XD Nope.
This is an Odocoiletaur (from 'Odocoileinae', the family of north-american deer including white-tails), or 'DeerTaur'... but Odocoiletaur looks cooler. They're a peaceful, herbivorous species of taur that inhabit temperate rainforests in herds of up to twenty, led by a dominant male. These taurs have very flexible upper torso spines, because of the need to reach their hind limbs to care for them.
This one is especially flexible, because I'm pretty sure normal deer can't pull their hind legs up that far. XD Are his horns stabbing his back, you ask? No, they're ver wide-spread like moose horns - they're actually curving to either side of his rump.