Rule 34 Dev - 2021 5_fingers animal_genitalia animal_penis anthro balls bed big_penis biped black_hooves canid canine canine_penis chair computer countershade_fur countershading dbruin deep_throat detailed_background digital_drawing_(artwork) digital_media_(artwork) dominant dominant_male duo equid equine equine_penis erection fellatio fingers fox fur furniture genitals gloves_(marking) hand_on_leg hand_on_thigh hooves horse inside irrumatio knot lying male male/male male_penetrating mammal markings monochrome muscular muscular_anthro muscular_male neck_tuft nude on_bed oral oral_penetration penetration penile penis sex size_difference standing submissive submissive_male throat_swabbing tuft|5688447120