rule 34 animal genitalia animal penis avian cutie mark earth pony equid equine equine penis feral feral on feral friendship is magic gallus mlp genitals gryphon half closed eyes hasbro hi res hooves long tail luciarts male malemale mammal monochrome my little pony mythological avian mythology narrowed eyes open mouth open smile penis pony sandbar mlp shower smile towel wet wet mane wings 5632827