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animal_genitalia avian black_body black_feathers bodily_fluids cloaca cloacal_penis detailed_background dinosaur dripping dromaeosaurid erection feathered_arms feathers feral forest forest_background genital_fluids genitals grinding grinding_on_natural_object improvised_sex_toy male male_feral markings masturbation melanth_(artist)moss nature nature_background outside outside_masturbation penile penile_masturbation penis plant precum precum_drip prehistoric_species reptile rock saurischian scales scalie solo tail theropod thrymja tree white_markings yellow_markings