Rule 34 Dev - 2021 5_fingers 7b7a2f animal_genitalia animal_penis anthro clothing dark_penis digital_media_(artwork) digital_painting_(artwork) equid equine equine_penis fingers genitals half-erect hi_res horse looking_at_viewer male mammal navel partially_submerged penis smile smirk solo standing swimwear white_body|5248812360