The Big ImageBoard (TBIB) - anal anal penetration anthro anthro on anthro anthro penetrated anthro penetrating anthro penetrating anthro ball gag biceps big penis biped black ball gag black ears black gag black nose black pawpads black stripes black tail blurred background brown hair brown horn cheek tuft cutaway doggystyle duo ear tuft erection eyebrows eyes closed facial tuft fangs from behind position fur gag genitals glans gloves (marking) grey body grey ears grey fur grey hair grey inner ear fluff grey mane grey pubes hair horn huge penis humanoid genitalia humanoid penis hybrid genitalia hybrid penis inner ear fluff internal internal anal knot knotted humanoid penis knotting leaning leaning forward male male/male male penetrated male penetrating male penetrating male mane markings muscular muscular anthro muscular male ninetht pawpads penetration penis pink penis pubes ridged horn sex short hair size difference standing standing sex striped arms striped back striped legs stripes triceps tuft white eyebrows white inner ear