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2014 anthro anus balls bottle butt claws container digitigrade dinosaur dominant dromaeosaurid duo erection genitals hi_res humanoid_genitalia humanoid_penis imminent_sex klongi kneeling larger_dom leaning leaning_forward legs_up lying male male/male monochrome nude on_back penis prehistoric_species puffy_anus reptile saurischian scalie simple_background size_difference tail theropod tongue tongue_out velociraptor white_background