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abs anthro athletic balls biceps big_muscles biped circumcised claws dinosaur fangs flaccid flexing genitals green_body green_skin humanoid_genitalia humanoid_penis male muscular muscular_anthro muscular_male nude open_mouth orange_eyes pecs penis pose prehistoric_species presenting reptile saurischian scales scalie solo standing sudonym tail teeth theropod tongue tyrannosaurid tyrannosauroid tyrannosaurus tyrannosaurus_rex vein