The Ultimate Guide: Horses is part of the Discovery Channel's nature series. Exploring the life of the powerful and majestic horse, the program features beautiful footage of horses in running packs, horses being born, horses gently grazing, and more. Expert commentary provides an educational overview of the dynamic creature, its life cycle and daily habits.

They can live for a century, wait a year between meals, and deliver 16 tons of crushing force with their jaws. Is it any wonder the ancient Egyptians revered the crocodile? Examine the unique talents — including infrasonic communication and suspended animation — that make the world's largest reptile such a tenacious predator and survivor.

Documentary that reveals the life of ants through graphics, natural history footage and interviews with entomologists.

Almost everybody loves dolphins. Some people think of them as being cooperative, intelligent and caring. Others even view them as being highly evolved versions of ourselves. Now the latest research has shed new light on these fascinating creatures, and some of it is surprising. In this Ultimate Guide volume, experience the beauty and wonder of dolphins and their underwater realm. Marvel at their spectacular - and seemingly impossible - acrobatics. Dive with them to depths of six hundred feet. Learn about their complex social skills, and discover the fantastically diverse membership of this far-flung family - including the mysterious freshwater dolphins of China, India and South America

Covering the domestic cat in great detail, The Ultimate Guide: House Cats is both informative and humourous. Illustrated in detail are how man and cats have become companions over the last 4,000 years and how the cat has never really been domesticated even though we think they've been. The familiar Ultimate Guide techniques are used to demonstrate why they can see in the dark, why they can jump so high and why they land on their feet. Also, explore a house with a 150 foot cat path that runs through the entire house, hanging from the ceiling.

Documentary examining the science, safety and history of aviation. Traces the evolution of planes through one century and two world wars. Uses graphics and animation to explain basics of flight, from the components most planes share to the physics that makes planes defy gravity.

Sun, wind, and rain are basic to life, but sometimes the weather is more than just that. Sometimes it's stronger, violent. The wind becomes a tornado, the rain a hurricane. The Earth's atmosphere, for a moment, makes it uninhabitable. And there's nothing we can do about extreme weather but try to predict it, prepare for it and hope that it never happens here. This DVD from the Discovery Channel looks at the innermost workings of a storm system to reveal the visible and invisible forces that drive our weather. Using the latest satellite imagery and 3D graphic animation, trade-winds, tornadoes, lightning, monsoon, and hurricanes are examined in detail. From the aurora borealis to the bizarre downpouring of fish and frogs, we learn that the earth's atmosphere is a delicate and ever-changing environment. Finally we delve into the past to discover how earth's volcanic origins helped create weather as we know it.

Modern submarines, enormous ships that are self-contained wonders of technology, are able to produce oxygen and water for their occupants. They are equipped with their own power plants, and feature sophisticated food service, entertainment facilities, firefighting stations, and a place for worship. Ultimate Guide: Submarines demonstrates how the submarine has developed since its first appearance in the Revolutionary War. In addition, scientists are harnessing the power of submarine-like vehicles to investigate the depths of the oceans.

Documentary that goes inside the framework of pyramids to show how these structures have changed over time, starting as flat-roofed houses and evolving into temples and grave sites. The program recontructs how these fabled pyramids and their cities must have looked at the peak of their civilizations.

Documentary about spiders, showing how arachnids jump, spin webs and poison and digest their prey. Covered by only a thin skin, their tiny bodies are extremely delicate, yet their venom can be lethal. The Sydney Funnel Web weighs just four-hundredths of an ounce, but it has half-inch fangs, sharp enough to pierce a toenail, and the most toxic spider venom known to man.