Shocking stories are emerging from a documentary about Playboy founder Hugh Hefner.  According to sources, Secrets of Playboy (which debuts on A&E this week) has some unexpected revelations.  Sure, there were orgies, drugs, abuse of power – we expected all of that.  But bestiality?  Well, color me surprised.  Linda Lovelace – she of Deep Throat fame – claims to have been “forced” to perform oral sex on a German Shepherd while Hefner and his friends watched.  Uh, just “watched”?  Hef’s ex-girlfriend, Sonda Theodore, says that wasn’t the only instance involving an animal.  “I walked in once, and he was [jerking off] our dog.  I said, ‘What are you doing?’  He said, ‘Dogs have needs.’  I said, ‘Stop that!’  I never let him be alone with our dog again.”