In The Secret Life of the Cat, 50 cats were fitted with GPS collars to track their every movement, and cat-cams to record their unique view of the world. In this groundbreaking experiment, a few cats stood out. They include the intruder cat, an unneutered tomcat, who comes into the village and seems to have no owner; the hunter, who prefers food that he can catch and kill to anything his owners might buy him; and the deserter cat who has abandoned his home in favour of a new set of owners. This film reveals that the relationship between cats and their owners isn't quite what we imagine.
Eagles are the most powerful birds in the sky, capable of tackling enormous prey, spotting food at vast distances and soaring for miles on the wing. Armed with cutting-edge filming technology, this documentary examines the science behind such extraordinary abilities. Featuring dramatic stories and some remarkable experiments, the film follows the story of a family of bald eagles in Iowa as two chicks face the challenges of life in the wild. Plus, bird specialist Lloyd Buck puts his trained golden eagle Tilly's skills to the test.
In this episode Brian uncovers how the stunning diversity of shapes in the natural world are shadows of the rules that govern the universe. In Spain he shows how an attempt by hundreds of people to build the highest human tower reveals the force that shapes our planet. In Nepal, honey hunters seek out giant beehives that cling to cliff walls. The perfect hexagonal honeycombs made by the bees to store their honey conceal a mathematical rule. Off the coast of Canada, Brian explains how some of the most irregular, dangerous shapes in nature - massive icebergs that surge down from Greenland and into shipping lanes of the Atlantic - emerge from a powerful yet infinitely small force of nature. Even the most delicate six-sided snowflake tells a story of the forces of nature that forged it.
The fifth programme explores the alliances formed between the animal and plant worlds. It examines the ways in which plants live together and rely on each other. Whether living together in harmony, relying on each other for homes, protection or food, or living off each other, by strangling or otherwise destroying each other in a bid to survive.
In this final episode, Iolo explores bird design - from their ability to fly to the way that their beak design, colour and camouflage enable them to live in the many habitats Wales has to offer. Using ultra-slow motion photography, Iolo looks at how garden birds have such control over take off and landing, and explains why fulmars are one of our most supreme fliers.
From powerful sharks to mysterious fish shoals, the underwater dynamic between predator and prey is a never-ending one. Join these amazing creatures as they employ both offensive and defensive evolutionary adaptations, such as sharp senses and swarm intelligence, in their bid for survival.