FURVERT!

abs alpha0 animal_genitalia animal_penis anthro balls bdsm biceps black_balls black_hair black_sheath bodily_fluids bondage bound bucephalus chain chained chained_to_wall dripping equid equine equine_balls equine_genitalia equine_penis erection genital_fluids genitals hair hi_res horse looking_at_viewer male mammal medial_ring muscular muscular_anthro muscular_male nipples nude obliques pecs penis precum precum_drip sheath solo stone_wall thick_thighs wall_(structure)