animal_genitalia animal_penis anthro balls bed big_balls big_penis black_body black_fur black_nipples canine_genitalia canine_penis close-up crotch_focus crotch_shot erection fur furniture genitals knot low-angle_view male muscular muscular_male nipples on_bed penis presenting presenting_balls presenting_penis sitting sitting_on_bed solo spread_legs spreading vein veiny_balls veiny_knot veiny_penis anotheranon canid canine canis mammal wolf absurd_res hi_res