FURVERT!

anal anal_penetration animal_genitalia animal_penis anthro anthro_on_anthro anus backsack balls biceps big_muscles bodily_fluids bovid bovine brown_body brown_fur butt cattle cum duo elbestia equid equine equine_genitalia equine_penis erection eyes_closed fur genital_fluids genitals hi_res horn horse interspecies male male/male male_penetrated male_penetrating male_penetrating_male mammal muscular muscular_male nipples nude penetration penis sex shallow_penetration tail tail_wraps tapering_penis vein wraps