FURVERT!

animal_genitalia animal_penis anthro anthro_on_anthro areola big_penis bodily_fluids bridle duo dustybeau_(artist)equid equine equine_genitalia equine_penis erection flared_penis frottage genital_fluids genitals hi_res holding_object holding_reins horse intraspecies larger_male larger_sub male male/male mammal medial_ring muscular muscular_male nipples penile penis penises_touching precum precum_string reins sex simple_background size_difference smaller_male submissive