The Great Migration is in action as animals cross the Mara River into Tanzania's Serengeti National Park millions of wildebeests and zebras make the epic journey, while big cats like lions and cheetahs share the famed African landscape.
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Jack meets with researchers on the front lines of animal conservation as they work to protect elephants, lions, rattlesnakes and bats.
Jack searches for some of the greatest ape species, like gorillas, orangutans and chimpanzees.
How bats find their way in the dark how caterpillars turn into butterflies how long tortoises can live.
Jack's high-tech gear and old-fashioned know-how elephants, wild dogs and koalas.
Jack counts down 10 amazing equine experiences.
Giraffes, zebras, moose and bongo.
Hippos, elephants, guanacos, elephant seals and other animals skilled at protecting their territories and themselves.
Corals in Curacao Galapagos marine iguanas Borneo's orangutans, Tasmanian devils, Rwandan mountain gorillas.
Elephant seals with their own freeway exit a drive to the end of the Earth for dolphins a Thai elephant expressway.
Kangaroos, dolphins and frogs bounce, bound and jump around.
Jack immerses himself in a variety of jobs caring for animals: a vet's assistant caring for rhinos, a bat researcher in South America, and he takes care of a king cobra in Malaysia.
The leopard, the Cape buffalo, the elephant, the rhino, the lion, and one more.
Cheetahs rhinos manatees kangaroos a time-traveling tour through natural history.
Six incredible, dangerous and dirty animal jobs include wrangling crocodiles, caring for elephants and herding cattle.
Elephants and manatees rhinos and tapirs giraffes and okapis.
Elephant seals with their own freeway exit a drive to the end of the Earth for dolphins a Thai elephant expressway.
Kangaroos, dolphins and frogs bounce, bound and jump around.
Jack immerses himself in a variety of jobs caring for animals: a vet's assistant caring for rhinos, a bat researcher in South America, and he takes care of a king cobra in Malaysia.
The leopard, the Cape buffalo, the elephant, the rhino, the lion, and one more.
Cheetahs rhinos manatees kangaroos a time-traveling tour through natural history.
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