Rule 34 Dev - 3_fingers 3_toes ambiguous_gender biped fangs feet feral fingers flying grey_body grey_horn grey_skin grey_tail grey_wings horn long_neck long_tail looking_away membrane_(anatomy) membranous_wings midair on_model open_mouth open_smile pink_tongue red_eyes simple_background smile snout solo spade_tail spikes spread_arms spread_wings tail teeth toes tongue toony white_background winged_arms wings artsy-theo nintendo pokemon aerodactyl dinosaur fossil_pokemon generation_1_pokemon pokemon_(species) prehistoric_species reptile scalie 2015 digital_drawing_(artwork) digital_media_(artwork) full-length_portrait portrait signature|7436373875