TV Guide for Yesterday Friday 10 in Sky Nature

When a great horned owl arrives covered in oil, Dr Sherri puts it through a terrifying procedure to save its life. Meanwhile, boxes of young foxes need help.

A celebration of nature's ultimate athletes as they survive, excel and dominate in Earth's toughest arenas, from apex predators to cunning creatures. Gorillas smash termite mounds to pieces, jaguars crack the skulls of caimans with apparent ease, and orcas hunt their prey as a team.

Cameras get up close with the hippo as rival males clash, crushing jaws snap and new life emerges beneath the water's surface.

The team races to contain a case of malaria brought in by orphaned infant Cesia, before assessing surrogate mum Sri's plan to help Bumi.

The local economy of Palau relies heavily on eco-tourism. But as this documentary shows, the country is fighting a hard battle against man-made environmental destruction.

When two harp seals are rescued, Hope's team struggles to save them and teach them the natural behaviour they need to survive in the wild.

The team prepares to introduce Kiki to fellow chimp Patricia, Oshine receives a special visitor from South Africa and Bueno has emergency treatment on several rotten teeth. Meanwhile, the keepers hear sad news about the world's oldest woolly monkey, Xuzy.

Animal director Jeremy decides to find out how much weight orangutan Oshine has lost since she arrived at the park, chimp Hananya is taken by surprise when he meets Kiki, and baby golden-cheeked gibbon Mikado shows off the latest stages of his colour change.

The hunt is on to find missing nursery-class orphan, Lahei, and it's revealed if Beni and Valentino will make the grade and finally earn their freedom.

The vibrant reef ecosystem of Raja Ampat, Indonesia, is twice the size of Singapore. See how the mysterious manta ray lives in these waters.

The journey along the Mekong Delta reaches its end, where it fans out into the South China Sea via nine channels, creating habitats for a variety of animals.

On the island of Providencia, a young female black crab undertakes a life-or-death hike to escort her 80,000 eggs from the mountain down to the sea.

In Zimbabwe, an African wild dog pack find themselves outnumbered by lions and hyenas, and the pups must learn quickly if the pack is to survive.

The team prepares to introduce Kiki to fellow chimp Patricia, Oshine receives a special visitor from South Africa and Bueno has emergency treatment on several rotten teeth. Meanwhile, the keepers hear sad news about the world's oldest woolly monkey, Xuzy.

Animal director Jeremy decides to find out how much weight orangutan Oshine has lost since she arrived at the park, chimp Hananya is taken by surprise when he meets Kiki, and baby golden-cheeked gibbon Mikado shows off the latest stages of his colour change.

The hunt is on to find missing nursery-class orphan, Lahei, and it's revealed if Beni and Valentino will make the grade and finally earn their freedom.

The vibrant reef ecosystem of Raja Ampat, Indonesia, is twice the size of Singapore. See how the mysterious manta ray lives in these waters.

The journey along the Mekong Delta reaches its end, where it fans out into the South China Sea via nine channels, creating habitats for a variety of animals.

On the island of Providencia, a young female black crab undertakes a life-or-death hike to escort her 80,000 eggs from the mountain down to the sea.

In Zimbabwe, an African wild dog pack find themselves outnumbered by lions and hyenas, and the pups must learn quickly if the pack is to survive.

The team prepares to introduce Kiki to fellow chimp Patricia, Oshine receives a special visitor from South Africa and Bueno has emergency treatment on several rotten teeth. Meanwhile, the keepers hear sad news about the world's oldest woolly monkey, Xuzy.

Animal director Jeremy decides to find out how much weight orangutan Oshine has lost since she arrived at the park, chimp Hananya is taken by surprise when he meets Kiki, and baby golden-cheeked gibbon Mikado shows off the latest stages of his colour change.

Alma gets a mysterious late-night monkey delivery. Amanda goes to the rescue of an ensnared waterbuck and the centre's resident hyena receives urgent treatment.

Vet Claire juggles to demands of caring for sick koala joeys and cameras see what it takes to save a squirrel glider caught in barbed wire.

In Zimbabwe, an African wild dog pack find themselves outnumbered by lions and hyenas, and the pups must learn quickly if the pack is to survive.

On the island of Providencia, a young female black crab undertakes a life-or-death hike to escort her 80,000 eggs from the mountain down to the sea.

When two harp seals are rescued, Hope's team struggles to save them and teach them the natural behaviour they need to survive in the wild.

Alma gets a mysterious late-night monkey delivery. Amanda goes to the rescue of an ensnared waterbuck and the centre's resident hyena receives urgent treatment.

Vet Claire juggles to demands of caring for sick koala joeys and cameras see what it takes to save a squirrel glider caught in barbed wire.