David Attenborough's Natural Curiosities

Some animals appear to have taken nature's gifts and stretched them to extreme limits. In this remarkable natural history documentary, David Attenborough looks at the chameleon's tongue and the giraffe's neck. One animal ended up with a super-stretched neck, the other a stretchy tongue. In both cases nature has found a way to turn the ordinary into the extraordinary.

David Attenborough examines the cases of the mysterious platypus and tadpole.

David Attenborough examines the overtly wrinkly skin of the elephant and the mole rat.

David Attenborough examines the narwhal's tusk and the spiral shells found on snails.

David Attenborough examines a zebra's stripes and the patterned wings of a butterfly.