Rule 34 Dev - anatomically_correct anatomically_correct_genitalia animal_genitalia animal_penis anus backsack balls barn big_balls big_penis black_anus black_balls black_body black_hair black_lips black_mane black_perineum black_tail blurred_background bodily_fluids collar collar_only detailed_background equine_anus equine_genitalia equine_penis feral flared_penis fur genital_fluids genitals glistening glistening_genitalia glistening_penis grey_eyes hair inside leaking_precum lips looking_at_viewer looking_back looking_back_at_viewer lying male mane medial_ring muscular nude on_side penis perineum pink_nose pink_penis precum presenting presenting_anus presenting_penis puffy_anus raised_leg raised_tail rear_focus rear_view smile solo window shuffur equid equine mammal animated webm|90787016