Sir David Attenborough examines whether cheetahs can really run at speeds of 70 miles per hour and achieve what should be physically impossible. Show more

The blue whale and the flamingo both have strange bodies determined by their diet. Both are oddities in their own groups and yet both are curiously similar. Show more

Looking at how some animals can regenerate entire body parts, including salamanders able to regenerate entire legs and tails to replace ones they've lost. Show more

Sir David Attenborough examines how some animals protect themselves with natural remedies in the most extraordinary ways. Show more

David Attenborough looks at how the bodies of some animals stretch and shrink in extraordinary ways. Show more

Sir David Attenborough examines how the curious minds of orangutans and crows helped them become inventive. Show more