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abs anthro anus arms_above_head backsack balls bound butt ceratopsian ceratopsid chasmosaurine claws dinosaur dominant dominant_male duo fersir flaccid foreskin genitals green_body green_scales grey_body grey_scales half-erect horn humanoid_genitalia humanoid_penis long_foreskin male male/male marginocephalian muscular nipples nude ornithischian partially_retracted_foreskin pecs penis prehistoric_species presenting raised_tail red_eyes reptile retracted_foreskin saurischian scales scalie sitting sketch smile smirk standing submissive submissive_male tail teeth theropod toe_claws tongue tongue_out triceratops tyrannosaurid tyrannosauroid tyrannosaurus tyrannosaurus_rex