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1:1 against_natural_surface against_surface against_tree anal anal_penetration anthro asphyxiation avian beak bird black_penis blue_body blue_feathers cariamiform cere_(anatomy)choking dinosaur dominant dromaeosaurid duo eye_contact feathers feral fur genitals group hi_res hybrid larger_dom larger_male leg_over_shoulder looking_at_another male male/male multicolored_body multicolored_feathers multicolored_fur muscular nude penetration penis pink_penis plant prehistoric_species reptile restrained saurischian scalie size_difference smaller_male staffkira2891 tail tapering_penis terror_bird terrorbird theropod tree tucakeane whiskers