Rule 34 Dev - 1male absurd_res animal_genitalia animal_penis anthro balls ballsack biceps big_balls big_penis black_balls black_penis bondage bound donovan equid equine erection fur genitals green_eyes hands_behind_back hi_res horse horseballs horsecock kobu_art looking_at_viewer male male_only mammal muscular muscular_male navel nipple_piercing nipples pecs penis piercing rope rope_bondage scrotum sitting solo striped_body striped_fur stripes testicles uneven_balls vein veiny_balls veiny_muscles veiny_penis zebra|4231400192