FURVERT!

3:4 all_fours animal_genitalia animal_penis anthro anus autumn backsack balls big_balls bodily_fluids butt equid equine equine_genitalia equine_penis flared_penis genital_fluids genitals half-erect hi_res hooves horse kneeling leaf looking_back male mammal medial_ring outside penis perineum phaulis precum presenting presenting_hindquarters puffy_anus raised_tail rear_view solo tail vein veiny_penis