Patrick Aryee checks out the biggest animals on Earth as he discovers why size matters in nature. Travelling to Asia, Australia, the Americas and Africa, he explains why these creatures evolved into giants and how crucial they are to their habitats.
Natural World74%
Nature79%
Planet Earth III85%
Seven Worlds, One Planet85%
Life on Our Planet80%
Life84%
Prehistoric Planet83%
Great Migrations77%
Earth at Night in Colour81%
Our Planet85%
Trials of Life83%
Welcome to Earth76%
Planet Earth86%
Planet Earth II86%
History 10171%
The Secret Lives of Animals80%
The Secret Life of Our Pets74%
Animal80%
Night on Earth73%
Mind Field82%
