TV Guide Sky Nature Saturday

The Carpathian Mountains stretch across seven European countries. Vast primeval forests, steep gorges and isolated peaks offer a vital refuge to some of the continent's most charismatic creatures. The opening instalment of this two-part documentary takes place in the summer months. A mother brown bear struggles to find food for her two cubs before the winter arrives. A pair of lynx kittens venture away from their den and honeybees pollinate flowers

The broadcaster invites viewers to join him as he takes an after-hours stroll around one of his favourite places, the Natural History Museum. But this is no ordinary tour as some of the many exhibits spring to life as the veteran naturalist strolls along

Following his visit to the Great Barrier Reef in 1957, naturalist and broadcaster David Attenborough returns and uses the latest filming techniques to unlock the secrets of the natural wonder. In the first edition, he descends beneath the waves at night and uses cutting-edge technology to generate computer scans of the sea floor. He also learns about a complex community of animals, as well as the annual coral spawning, which is responsible for the great diversity in the reef

Using the latest technology, the naturalist explores the shark-infested waters of Osprey Reef in the Triton submersible, before returning to the nesting grounds of the Green Sea Turtle, 60 years after his first visit to Raine Island. He also marvels at manta ray cleaning stations on Lady Elliot Island, and tracks dwarf minke whales to discover their surprising reasons for returning, and why the reef is vital for their survival

The naturalist examines what the next few decades may hold for this remarkable ecosystem, and looks at the work of scientists who are trying to preserve the area and the species that inhabit it, assisted by research vessel the Alucia. He also embarks on an ambitious attempt to dive further into the reef than ever before to witness the resilient coral that live down in the depths and see if they hold answers that may help to overcome challenges that lie ahead, as the impact of humans on the reef continues to take its toll

The struggle for dominance in the natural world, beginning in Madagascar, where fighting creatures include a neck-wrestling weevil and a lemur mum who fights with her baby on board

Exploring the unique artistic ability of Thai elephant Hong, whose surprisingly impressive painting skills have made waves in the art world, and have cast doubt on a number of theories regarding animal intelligence

The story of Skamp, a four-year-old schnauzer that is said to have predicted the deaths of 58 residents in an Ohio nursing home over the past three years. The dog appears to alert staff by barking and then stays with the patients until they die