FURVERT!

1:1 2015 aaron_(artist)abs animal_genitalia animal_penis anthro athletic balls biceps big_balls big_muscles big_penis biped black_hair border brown_eyes equid equine equine_genitalia equine_penis erection flexing fur genitals grey_body grey_fur hair hi_res hooves horse huge_balls huge_penis macro male mammal muscular muscular_anthro muscular_male nipples nude pecs penis solo standing teeth vein white_body white_border white_fur