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anthro arms_tied bdsm bondage bound clean_diaper diaper dinosaur feeding_tube hands_behind_back hi_res laboratory laboratory_equipment laxative legs_tied male maxus_(steelshark)medical_instrument muscular muscular_male prehistoric_species reptile restrained saurischian scalie scientific_instrument side_view solo steelshark suspension theropod toothy_grin tyrannosaurid tyrannosauroid tyrannosaurus tyrannosaurus_rex