David Attenborough's Natural Curiosities

It is said that fleas can jump the equivalent of humans leaping over St Paul's Cathedral and it is famously claimed that cheetahs can run at speeds of 70 miles per hour. But are these incredible suppositions really true? In this remarkable natural history documentary, David Attenborough asks if these animals can really achieve what should be physically impossible, and sorts fact from fiction.

Orangutans are clever tool users, but strangely such skills remained undiscovered for centuries. In this intriguing wildlife documentary, David Attenborough investigates a discovery in a remote Sumatran swamp that revealed their true potential. And he finds that crows are incredibly clever animals that can solve problems, and make surprisingly sophisticated tools.

The bodies of some animals stretch and shrink in extraordinary ways. The anaconda can swallow prey twice its own body size and then go for over a year without eating. The camel's curious hump can almost double in weight giving it the energy to travel huge distances across deserts. In this revealing nature documentary, David Attenborough asks: what is the secret behind such expandable bodies?

The blue whale and the flamingo both have strange bodies determined by their diet. Blue whales grow to enormous sizes by feeding on tiny shrimp-like creatures, while flamingos spend their lives eating with their heads upside down. David Attenborough looks at both of these remarkable animals in this absorbing nature documentary and discovers that they have curious similarities.

Humans are not alone in using medicines against injuries and infection. Some animals protect themselves with natural remedies in extraordinary ways. As David Attenborough discovers in this gripping nature documentary, hippos produce a blood-red 'sweat' that acts as a sunblock, while capuchin monkeys rub themselves with insect-repellent leaves to protect themselves from bites.

Some animals can do the seemingly impossible. Salamanders can regenerate entire legs and tails to replace ones they've lost, while deer shed their massive antlers and regrow them from a few remaining cells each year. In this intriguing natural history documentary, David Attenborough asks how these animals regenerate entire body parts and why is it not possible for all animals to do the same?