
Nature
The breeding, training and behavior of young dogs and advice on what to avoid when choosing a puppy.

The breeding, training and behavior of young dogs and advice on what to avoid when choosing a puppy.

There are over 400 breeds of dog, each unique for its personality, habits, and form.

There are over 400 breeds of dog, each unique for its personality, habits, and form.

Learn how the domestication of dogs might have taken place.

Learn how the domestication of dogs might have taken place.

Ernest Thompson Seton's tale about an encounter with a wolf.

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.

Grizzly bears cause social and environmental problems at Yellowstone National Park.

Ecologist Chris Morgan camps among the largest concentration of grizzles in the world.

Ecologist Chris Morgan explores the world of black bears.

Bird nests come in all shapes and sizes; each one is a work of art, built with just a beak.

Explore the delicate balance of the interconnected lives of bears, trees, and salmon.

Ecologist Chris Morgan travels to northern Alaska in late fall to see polar bears.

A closer look at primates, the closest relatives of human beings.

Fly high with some of the most extraordinary and interesting birds on Earth.

Learn why tigers, lions, jaguars, cheetahs, and snow leopards are superstars.

Starting a dust storm in Australia; lighting a hot plate in a quarry in the U.K.; ice storm.

The crucial role of water in weather; weighing a cloud; how rain could crush a car.