Rule 34 Dev - 2013 4_toes abs amber_eyes anal anal_sex animal_genitalia anthro athletic balls bed bedroom biceps big_muscles big_penis black_fur black_penis black_skin brown_skin claws clenched_teeth cobra corn_snake derrick digitigrade equine erection fangs forked_tongue fur glans grabbing_sheets grey_skin grin group group_sex hand_on_head hextra hi_res huge_muscles hybrid_penis inside interspecies kneeling licking lizard lying male mammal markings medial_ring missionary_position muscular muscular_male mutant_serpentina nude on_back on_front open_mouth oral orange_eyes orange_skin pecs penetration penis penis_lick reptile scales scalie sex side_view simple_background slit snake snake_hood standing stripes stripes_(character) teeth threesome toe_claws toes tongue tongue_out vein white_fur yaoi yellow_sclera zebra|2447160608