{{ok apparently I'm wrong on the centaur physiology, I have just come across an official d20 aide called the Slayers Guide to Centaurs, which has a breakdown of centaur physiology in it.<br/><br/>Apparently in the upper body there is a heart (only 2 chambered and a lot smaller than the main heart, which is the normal 4 chambered), 2 rudimentery lungs (connected by a seperate windpipes (a left and right one) to the main lungs), and a stomach pouch, (which then leads to the main stomach). No intestines in the upper body though, the upper stomach leads into the lower stomach via a second eosophagus.<br/><br/>Wish I had managed to get hold of this before I made that post yesterday<img alt=":?" src="./images/smilies/icon_confused.gif" title="Confused"/>I'll have to decide if I go on the official description or what I've described (though explaining how I miss a heart may be a little difficult<img alt=":)" src="./images/smilies/smile.gif" title="Smile"/>}}