2012analanal_penetrationanthroanthro_penetratinganthro_penetrating_humanballsbig_ballsbipedblack_and_whitebovidbovinecattleduoerectionfacial_piercinggenitalsgraphite_(artwork)hornhumanhuman_on_anthrohuman_penetratedinterspecieslarger_anthrolarger_malelaughingartistleashmalemale/malemale_penetratedmale_penetratingmale_penetrating_malemammalmonochromenose_leashnose_piercingnose_ringpenetrationpenispiercingring_piercingsexsize_differencesmaller_humansmaller_malesmaller_penetratedtraditional_media_(artwork)