NATURE’S N BIGGEST BEASTS, 8PM, BBC2

IT MIGHT seem that the world’s largest creatures c are at an a advantage, but being big comes with sizeable challenges. The giraffe’s long neck requires it to have remarkable blood pressure, while the Komodo dragon’s enormous appetite means the world’s largest lizard must tackle prey ten times its weight. The kakapo may be one of the world’s largest parrots, but that has come at the cost of the ability to fly — the same price paid by the ostrich, the world’s fastest two-legged animal. This wonderful, fact-filled Natural World film explores what it takes for big beasts to survive.