The Big ImageBoard (TBIB) - 5:4 all fours anal anal knotting anal penetration animal genitalia animal penis anthro anthro on feral anthro penetrated bestiality biped black bars blue collar blue hair blush bodily fluids canid canine canine genitalia canine penis canis chastity cage chastity device collar cum cum in ass cum inside cutaway digitigrade direction lines doggystyle domestic dog duo eyes closed feral feral penetrating feral penetrating anthro fox from behind position genital fluids genitals hair internal internal anal knot knotting leash letterbox male male/male male penetrated male penetrating male penetrating male mammal motion lines motion outline mounting multicolored body nude open mouth penetration penile penile penetration penis penis in ass pivoted ears quadruped sex sharkguts story story in description takum teeth tongue tongue out