Rule 34 Dev - animal_genitalia animal_penis anthro anus arms_tied back_muscles backsack balls bdsm biceps big_anus big_balls big_butt big_penis biped black_anus black_balls black_hair black_perineum bondage bound brown_body brown_fur butt equine_anus equine_genitalia equine_penis erection free_use fur genitals hair looking_at_viewer looking_back looking_back_at_viewer male medial_ring mottled mottled_genitalia mottled_penis muscular muscular_anthro muscular_male muscular_sub nude nude_male outside penis perineum pony_diffusion_(model) presenting presenting_anus presenting_hindquarters public public_exposure public_nudity public_use puffy_anus raised_tail rear_view restrained restrained_arms restraints rope rope_bondage sky smile solo stocks submissive submissive_male text two_tone_anus director_aislopper equid equine horse mammal english_text hi_res|79695928