If you predict the future by hearing it from the horse's mouth, would that be hippostomamancy?

It's all Greek to me, as it should be...in fact, although I have read "osteomancy" (kooky girlfriends and their kooky books), the word "ossomancy" seems more pure. Word gurus, please pass judgment!

(Make sure to include the disclaimer "No animals were injured, disembowled, dismembered, decapitated, boiled or otherwise harmed in the making of this wise judgement")

-CB