Many animals have mastered the trick of gliding through the forest canopy. Flying frogs stretch the webbing between the toes of their enlarged feet. Some lizards spread elongated ribs covered in flaps of skin. And the colugo, a strange South-East Asian mammal, can travel as much as 70 metres (230 feet) between trees by spreading a membrane of skin that connects its limbs. Despite a lack of obvious body parts that can double up as a decent pair of wings, some snakes, too, can glide for remarkable distances.
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