2024 animal_genitalia animal_penis anthro ball_tuft balls black_balls black_body black_fur black_nipples body_hair close-up equine_genitalia equine_penis erection fur genitals happy_trail low-angle_view male nipples nude penis pubes sky smile solo stable_diffusion striped_body striped_fur stripes tuft white_body white_fur worm's-eye_view monkeyelf_(director) equid equine mammal zebra hi_res