Rule 34 Dev - 2018 animal_genitalia barbed_penis big_penis black_and_white digital_media_(artwork) dragon feral genital_slit grass half-closed_eyes hi_res how_to_train_your_dragon knot leaning male male_only monochrome night_fury on_hind_legs penis prestomajesto scalie sketch slit smile solo thick_penis toothless tree wings|2921157280