David Attenborough's Natural Curiosities: Armoured Animals

Sir David Attenborough examines the mysteries behind some of nature's most fascinating creatures and plants. Both the rhino and the hedgehog protect their bodies with formidable armour. Are these defences really what they seem? The rhino's thick folds of skin are in fact surprisingly sophisticated radiators. But what other purpose could a hedgehog's spines have apart from protection? Catching apples, perhaps?