Rule 34 Dev - abstract_background animal_genitalia animal_penis balls big_penis black_hair bodily_fluids breath broken_horn curved_horn darkened_genitalia equine_genitalia equine_penis ethereal_hair facial_hair fangs feral fetlocks genital_fluids genitals glowing glowing_eyes grey_body hair hooves horn long_hair long_tail male medial_ring muscular panting penis precum red_eyes sharp_teeth sheath sideburns smoking_eyes snarling solo tail teeth vein veiny_penis snowberry friendship_is_magic hasbro my_little_pony mythology king_sombra_(mlp) equid equine horse mammal mythological_creature mythological_equine pony unicorn 5:4|16543445450