Last updated at 12:32

Pictures: Take a look inside a Komodo dragon's head

A BBC film crew get inside the head of the world's largest venomous animal - the Komodo dragon.
Scientists made a computer model of a dragon's skull to see what happens when they bite. The areas of in red show that the dragons risk breaking their own jaws if they bite down very forcefully on their prey.
Skull stress of komodo dragon (c) Stephen Wroe
They're not small themselves, but they can eat much bigger prey as large as a buffalo. They have a weird throat that can expand to allow them to eat large bits of meat; and they can scoff up to 80% of their bodyweight in one go!
Komodo dragon with throat inflated (c) Gembong Nurrasa
Experts used to think that Komodo dragons had harmful bacteria in their mouths which they used to kill their prey. But now some people think that the dragons have venomous saliva.
Close up Monty (c) Bryan Fry
Komodo dragons are listed as a vulnerable species with only around 4,000 animals living on five Indonesian islands. Komodo - Secrets of the Dragon is on BBC Two at 8pm on Wednesday, 24 August.
Bryan and Monty (c) Bryan Fry
Komodo dragons were first found on Indonesian islands over 100 years ago but experts have only recently discovered that they're the world's largest venomous animal.
Komodo dragon (c) Tom Hooker
A special scan of a Komodo dragon's head shows that they have a venom gland (shown in red). Experts have found that the venom is dangerous because it could stop blood from clotting.
Dragon MRI scan (c) Bryan Fry