It's posts like this that just reinforce the idea that centaurs are freaky creatures. Why a six-limbed creature? Actual mammals have at most 4 limbs. What does it eat? Is the stomach a horse stomach or a human stomach? Does the human head have to eat 15 kilograms of grass per day, munching it inefficiently with its human teeth? Can it just blend it up and drink vast quantities of smoothies instead? Are the centaur's front limbs massively strong, unlike a horse, because it has to support a whole secondary torso right at the front of its body? Does the whole body have the same notoriously finnicky immune system and fragility of a horse? Where's the heart, is it in the human chest or the horse chest? If it is running hard will it be the human chest that's panting, using those tiny lungs to power an entire body? Or is there just an air tube down through the useless human chest all the way to the horse's mighty lungs? If the lungs being used are the horse ones, what's all that room in the human chest being used for?