Nature
Some croc species have exceeded 20 feet -- Nile crocs.
Some croc species have exceeded 20 feet -- Nile crocs.
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The future of the macaw, whose survival may depend on poachers.
Half of Australia's 56 species of parrots are shown in outstanding photography and more.
Parrot experts, owners and biologists share their stories.
Fly with the Super Hummingbirds: great athletes, tender mums, brave in combat and up for challenges.
Female Adélie penguins lay their eggs and leave the males to guard the nests.
Deforestation threatens macaque monkeys of Japan.
Icebergs are the source of life for seals, krill, penguins and petrels.
Powerful winds affect Antarctica's climate and topography.
Penguins, seals, soft corals, sponges, and tubeworms adapt to life in Antarctica's subzero waters.
NAT00002
The relationship between man and dog during the 1,200-mile Iditarod dog-sled race.
Dog trainers adopt unwanted dogs from shelters and train them to herd sheep and sniff bombs.
Explores relationships within a wild-dog pack.
Learn how the domestication of dogs might have taken place.
There are over 400 breeds of dog, each unique for its personality, habits, and form.
The breeding, training and behavior of young dogs and advice on what to avoid when choosing a puppy.
Ernest Thompson Seton's tale about an encounter with a wolf.
The Druids are the first wolves reintroduced into Yellowstone National Park.
The grizzly and the wolf meet in Yellowstone National Park.
Ecologist Chris Morgan travels to northern Alaska in late fall to see polar bears.
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