The Allosaurus, one of the largest dinosaurs, was a large bipedal predator that paleontologists believe grew to over 12 meters (39 feet) long and 5 meters (16.5 feet) tall.
camouflage
To camouflage themselves, red-eyed tree frogs cover their blue sides with their back legs, tuck their bright orange feet under their belly, and keep their bulging red eyes shut.
The hoopoe is a particularly conspicuous bird. Its boldly-barred plumage and beautiful crest, which it moves up and down, never fail to attract attention.
Adjective
having a lustrous or brilliant appearance
iridescent
Males have iridescent blue bodies and multicolored tail feathers ending with colorful 'eyes.' As the males strut, females choose their partners based on the beauty of the display.
The ostrich may look ungainly, yet they run quickly and efficiently. The secret is their springiness - ostrich tendons store twice as much "elastic energy" per step as we do.