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