Guts • episode "S1E2" • Origins of Us

58:48

Horizon discovers what your cat really gets up to when it leaves the cat flap. In a groundbreaking experiment, 50 cats from a village in Surrey are tagged with GPS collars and their every movement is recorded, day and night, as they hunt in our backyards and patrol the garden fences and hedgerows. Cats are fitted with specially developed cat-cams which reveal their unique view of our world. You may think you understand your pet, but their secret life is more surprising than we thought.

Nature

51:31

Plants are able to communicate with each other in ways we are only now beginning to understand. Some plants can differentiate between roots of their "family" and roots of other kinds of plants when they touch underground. See how plants "talk" to each other and find out what they talk about!

S1E2 • Invisible Nature • 2017 • Nature

43:58

Pouring out of Lake Victoria, the Nile bursts into life, growing vast with sandy banks and mighty rapids. Under the scorching sun, elephant herds leave the savannah to drink and bathe in the river.

S1E2 • Wild Nile • 2014 • Nature

28:03

The team has come to the very deepest part of the jungle, where streams contain the richest life, as well as danger, from four-metre caiman and the electric eel - a fish with a 600 volt shock.

S1E4 • Amazon Abyss • 2005 • Nature

56:39

In the heart of the Atlantic, Gordon Buchanan joins a team looking to discover why huge numbers of devil rays, fish with 'wings' nearly four metres across, and gather every summer near the Azores archipelago. In northeast Turkey the on-board cameras are carried by brown bears as part of a study trying to understand why so many bears survive in a small patch of forest. In southern France on-board cameras help scientists trying to prove that guard dogs can help protect sheep flocks from wolf attacks. The night-vision cameras show how the dogs work together as a team to fend off the wolves.

S1E3 • Animals with Cameras • 2018 • Nature

59:07

Zoologist and explorer George McGavin goes in search of some of the world's most impressive swarms. By getting right to the heart of these natural spectacles, he finds out why swarms are the ultimate solution to surviving against all odds and discovers how unlocking the secrets to how animals swarm could be crucial to understanding our own increasingly crowded lives.

2013 • Nature