Rule 34 Dev - 5_toes abs animal_genitalia animal_penis anthro balls balls_expansion barn biceps big_balls big_muscles big_penis body_size_growth dialogue equine_genitalia equine_penis erection expansion feet flexing genital_expansion genitals growth huge_balls huge_muscles huge_penis humanoid_feet hyper hyper_balls hyper_genitalia hyper_penis inside macro male masturbation moan muscle_growth muscular muscular_anthro muscular_male nude pecs penis penis_expansion plantigrade size_transformation soles solo toes transformation interz sound_warning ray_'smokes'_gunn equid equine horse mammal 16:9 2022 3d_(artwork) 3d_animation animated digital_media_(artwork) hi_res huge_filesize long_playtime sound voice_acted webm widescreen|14299267185