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2012 4_toes all_fours ambiguous_gender anisodactyl anthro armband arms_bent ass_up avian avian_feet beak bent_leg book butt claws digitigrade dinosaur dromaeosaurid duo feathered_crest feathered_wings feathers feet greyscale head_crest holding_book holding_object long_tail looking_at_another looking_at_butt lying monochrome nude on_front one_calf_up paws prehistoric_species raised_calf raised_tail reading redraptor16 reptile saurischian scalie side_view simple_background snout surprised tail tail_feathers talons theropod toes velociraptor white_background wide_eyed winged_arms wings