4_toes abs animal_genitalia animal_penis anthro anus armpit_showing balls big_balls big_penis biped black_balls black_body black_fur bound canine_genitalia canine_penis chain claws collar cuff_(restraint) digitigrade erection fangs feet fur genitals glistening glistening_balls glistening_genitalia glowing glowing_eyes knot looking_at_viewer male muscular muscular_anthro muscular_male narrowed_eyes nipples nude nude_male open_mouth penis presenting presenting_anus presenting_balls presenting_penis raised_arms restraints saggy_balls shackles sheath sitting sitting_on_bench solo spread_legs spreading tail_anus teeth toe_claws toes tongue tuft vein veiny_knot veiny_penis wall_(structure) anotheranon canid canine canis mammal were werecanid werecanine werewolf wolf absurd_res hi_res