The Big ImageBoard (TBIB) - anal anal penetration animal genitalia animal penis anthro anthro on anthro anthro penetrated anthro penetrating anthro penetrating anthro anus back muscles ball size difference balls big balls big dom small sub big muscles big penis blush bottomwear bound canid canine canis chaps clothed clothing cowboy hat cross-eyed denim denim bottomwear denim clothing digitigrade domestic dog dominant ear piercing ear ring equid equine equine genitalia equine penis erection eyebrows eyewear facial hair frenum ladder frenum piercing furgonomics genital piercing genitals glasses group half-closed eyes hat headgear headwear holding face hooves horse huge balls huge muscles huge penis humanoid genitalia humanoid penis jay (creeeples) jeans kihu kris (zourik) ladder piercing large penetration larger male looking at another looking pleasured male male/male male penetrated male penetrating male penetrating male mammal marshall (marshallhorsead) medial ring muscular muscular male mustache narrowed eyes nipples nude open bottomwear open clothing open pants pants pawpads paws pecs penetration penile penile penetration penis penis in ass penis piercing penis size difference perineum piercing prince albert piercing raised inner eyebrows restrained ridiculous fit ring piercing rope sex sideburns size difference small penis smaller male smaller penetrated smile tongue tongue out wrists tied