The Big ImageBoard (TBIB) - age difference anal anal penetration animal genitalia anthro anthro on anthro anthro penetrated anthro penetrating anthro penetrating anthro balls blush brown body brown fur canid canine canine genitalia canis digital media (artwork) duo erection fur genitals grin hi res inside intraspecies jailbird kiro (fenneckiro) knot larger male looking pleasured male male/male male penetrated male penetrating male penetrating male mammal mutt (wagnermutt) older male open mouth penetration penile penile penetration penis in ass reverse stand and carry position sex size difference smaller male smaller penetrated smile standing standing sex wagnermutt wolf