In 1971, graduate student Penny Patterson began teaching sign language to a gorilla named Koko, a scientific experiment that evolved into an intimate friendship lasting almost half a century and changed the course of human-animal communication.
The best selling factual series of all time is now even better! Now, with the addition of all-new commentary and new bonus programs, you can relive this incredible experience all over again!.
Contains four episodes of the television program "Secret Life of Predators" which looks at the behaviors of predatory animals, including animals in oceans, forests, open spaces, and on the edge.
A collection of six television wildlife documentaries narrated by David Attenborough, each on a different animal, covering: crocodiles, eagles, leopards, polar bears, humpback whales, and wolves.
Documents the efforts of a team of wildlife veterinarians from the Marine Mammal Center in Sausalito, California as they fight to save their animal patients as well as to uncover the cause of a mysterious neurological illness plaguing marine mammals like California sea lions and harbor seal pups.
