Rule 34 Dev - 2017 4_toes animal_genitalia animal_penis anthro anus balls barbed_penis big_balls big_penis black_dragon black_eyes black_skin claws dragon dreamworks erection feral_dragon half-closed_eyes how_to_train_your_dragon huge_cock justmegabenewell long_tail looking_at_viewer lying male male_dragon male_only membranous_wings night_fury penis precum presenting relaxing scalie simple_background solo solo_male spread_legs spreading thick_penis toes toothless wings yellow_eyes|2537694088