In this fourth episode, Iolo Williams explores how birds in Wales have adapted to living alongside us, making use of our buildings, parks and gardens and even the waste we throw away. One of the most notorious urban birds is the gull and Iolo explains why these very adaptable and intelligent birds are doing so well in Cardiff
In nature, living long enough to breed is a monumental struggle. Many animals and plants go to extremes to give themselves a chance. Uniquely, three brother cheetahs band together to bring down a huge ostrich. Aerial photography reveals how bottle-nosed dolphins trap fish in a ring of mud, and time-lapse cameras show how the Venus flytrap ensnares insect victims. The strawberry frog carries a tadpole high into a tree and drops it in a water-filled bromeliad. The frog must climb back from the ground every day to feed it. Fledgling chinstrap penguins undertake a heroic and tragic journey through the broken ice to get out to sea. Many can barely swim and the formidable leopard seal lies in wait.
In the balmy tropical Atlantic, everything from dolphins, manatees and whale sharks to sunbathing jellyfish thrive in the Caribbean's warm, sheltered waters, fringed with coral reefs and rich mangrove forests. But extreme heat in Africa unleashes terrifying hurricanes, causing chaos across the region.
David Harewood narrates a documentary exploring three of the most exotic and remote islands on the planet, beginning with the unique and extraordinary wildlife of Madagascar. As the oldest island on Earth, life has had time to evolve and there are now more unique plants and animals on Madagascar than any other, with footage of ring-tailed lemurs, labord's chameleons and Decken's sifakas.
How and why dogs have become such good working companions, including Midge, the world's first police Chihuahua, and Joey, a sheepdog from the Cotswolds. Mother-of-four Toni Curtis gives her remarkable account of the fateful day when she was swept out to sea off the north coast of Wales and how she owes her life to the Newfoundland dog that saved her life..
Pumas are also known by the names of cougar or mountain lion. However, these cats are only distantly related to lions. They're much more closely related to cheetahs. And while pumas are often found in mountains, they're just as at home in the lowlands, dense forests, or deserts.