Rule 34 Dev - 5_fingers animal_genitalia animal_penis anthro balls biped equine_genitalia equine_penis erection fingers genitals hair male mane medial_ring muscular muscular_anthro muscular_male nude penis simple_background solo standing klongi jericho_(ulfhednar) andalusian_horse equid equine horse mammal 2016 greyscale hi_res monochrome|8721650070