There is no permanent water in Botswana’s Makgadikgadi Pans. It is only seasonal rains that make the saltpans habitable for thousands of zebra. Zebra families on the saltpans are generally made up of a single stallion, mares, and their foals. "Great Zebra Exodus" premieres May 15, 2013 at 8/7c (check local listings).

Despite the presence of white-tailed deer in our lives, we've only begun to understand what's going on in their lives. "The Private Life of Deer" airs Wednesday, November 27 at 10/9c (check local listings).

Producer Kevin Bachar on how the filmmakers of "The Private Life of Deer" tracked and filmed populations of whitetailed deer in the suburbs of New York.

The striking white Lipizzaner stallions of the famed Spanish Riding School in Vienna have been thrilling audiences for centuries. "Legendary White Horses" premieres Wednesday, May 1 at 8/7c (check local listings).

Far from the Spanish Riding School in Vienna, Lipizzaner foals begin life with their mothers in the hills of Western Styria on the Piber Stud Farm. Surprisingly, the young horses are born dark brown or black, gradually turning white over time. A few remain brown as adults. The foals live much as wild horses do, but there are regular social interactions with humans to build trust early-on.

For 450 years, Lipizzaner stallions have been performing for audiences in Austria's capital. The stallions go through extensive training at the Spanish Riding School, where they learn to perform acrobatic feats and synchronized movements known as high classical dressage. "Legendary White Stallions" premieres Wednesday, May 1 at 8/7c (check local listings)

The remarkable lifecycle of the eel, a catadromous fish found all over the globe, in fresh and salt water ecosystems alike. Eels begin life in the ocean before migrating in their larval stage to rivers and streams where they can spend decades before returning to the oceans to spawn. The Mystery of Eels premieres April 17 at 8/7c.

Inspired by the Japanese art form Gyotaku, a type of Japanese fish printing popularized in the mid-1800s, artist and naturalist James Prosek created a series of pieces in the gyotaku style. But instead of using the traditional large-scaled carp to make his nature prints, Prosek decided to use a rather unusual fish as his creative tool, the eel.

The Eel Project trains students and community members to monitor New York's wild eel populations. Volunteers record data on the eels before releasing them above nearby dams and other barriers. Chris Bowser, who heads the project, works for the New York State Department of Environmental Conservation Estuary Program and Research Reserve, in partnership with Cornell's Water Resource Institute.

There are some things in nature we just don't understand, and this creature is one of them. Eels are coveted by the Japanese, sacred in New Zealand, and making people millionaires in Maine. But that's only part of the story. "The Mystery of Eels" premieres Wednesday, April 17 at 8/7c on PBS (check local listings).

To protect against herbivores the wild tobacco plant deposits trichomes, sweet treats irresistible to but also potentially fatal for leaf-eating caterpillars. Shortly after ingesting the trichomes, the insect releases a particular odor that attracts ground-foraging predators. "What Plants Talk About" premieres Wednesday, April 3 at 8/7c on PBS (check local listings).

From the stunning heights of the Great Basin Desert to the lush coastal rainforests of Canada, scientist J.C. Cahill takes us on a journey into the secret world of plants, revealing a landscape of pulsing activity, where plants communicate, co-operate and, sometimes, wage all-out war. "

Unable to produce its own food, the dodder vine must live entirely off a host plant. In a series of experiments, Researchers Consuelo M. De Moraes and Mark Mesker show that to find a host plant from which to drain nutrients, the parasitic plant "sniffs" out the chemical scents released by the leaves of nearby plants. "What Plants Talk About" premieres April 3 at 8/7c (check local listings).

In Canada's vast plains, the biggest buffalo and wolves in the world do battle. Here, one wolf pack struggle to maintain the family business: bringing down buffalo. "Cold Warriors" airs Wednesday, February 13 at 8 PM (check local listings).

Breathtaking footage of a wolf pack going after a herd of bison in Canada's Wood Buffalo National Park. "Cold Warriors: Wolves and Buffalo" premieres February 13, 2013 at 8/7c (check local listings).

Sir David Attenborough on the anti-whaling campaigns of the mid-late 20th century that changed our consciousness, and ushered in an era of commitment to save these incredible marine mammals from extinction.

Before David Attenborough left Zoologist Dian Fossey's camp in the Virunga National Park, he promised to help her in her efforts to save the mountain gorilla populations. He joined with other conservationists to create the Mountain Gorilla Fund. "Attenborough's Life Stories: Our Fragile Planet" premieres February 6, 2013 at 8/7c (check local listings).

Hear Attenborough’s reflections on the dramatic impact human beings have had on the natural world. 2/6/2013

Hear Attenborough’s reflections on the dramatic impact human beings have had on the natural world. "Attenborough's Life Stories: Our Fragile Planet" airs Wednesday, February 6 at 8 PM (check local listings).

Sir David Attenborough accompanies an imprinted family of Greylag geese in flight. "Attenborough's Life Stories: Understanding the Natural World" premieres January 30 at 8/7c (check local listings).