FURVERT!

anal anal_penetration animal_genitalia animal_penis anthro balls barn bdsm bit_gag bodily_fluids bondage bound cum equid equine equine_genitalia equine_penis erection gag genital_fluids genitals hi_res horse julius_(windsorlion)male mammal muscular muscular_anthro muscular_male muscular_sub otterscience penetration penis restraints rope rope_bondage solo submissive submissive_male