Rule 34 Dev - 1:1 2boys 5_fingers abs alpha_male animal_genitalia animal_penis armpit_hair biceps big_balls big_dom_small_sub big_penis blakenfen bodily_fluids body_hair brown_body brown_fur brown_hair collar collar_only ear_piercing equid equine equine_penis erection fingers fur gay genital_fluids hair half-erect happy_trail hi_res holding_leash holding_object hooves horse horsecock humanoid_penis interspecies kneeling leash lutrine male male_only mammal medial_ring muscular muscular_male muscular_thighs mustelid nipples nude open_mouth oral original_character pecs penis penis_on_face penis_size_difference piercing plantigrade precum pubic_hair quads saliva size_difference smile standing tarrin testicles text tongue tongue_out vein veiny_penis watermark yaoi|3847931440