The Big ImageBoard (TBIB) - 2008 all fours anal anal penetration anatomically correct anatomically correct penis animal genitalia animal penis anthro anthro on anthro balls biped bite black balls black eyes black fur black hair black hooves black mane black penis black stripes black tail blue eyes caribou (artist) cum cum on ground cum while penetrated doggystyle domination duo ear biting ear markings equine equine penis erection facial markings from behind position fur gloves (marking) hair hooves humanoid hands male male/male male domination male penetrating mammal marker (artwork) markings multicolored fur multicolored hair multicolored mane nude penetration penis sex signature simple background snout striped fur striped tail stripes stripes (character) stripes (copyright) tail grab tail tuft traditional media (artwork) tuft two tone fur two tone hair two tone mane two tone tail white background white fur white hair white mane white tail zebra