Explains the reasons why the American bison came close to extinction, discusses the efforts of William Temple Hornaday to inform people of the crisis in bison populations and to start a bison herd at the Bronx Zoo, and looks at how the governments of the U.S. and Canada helped by creating wildlife preserves for the animals.
Surveys some of the land mammals that became extinct naturally, long ago, and their present-day descendants who are threatened with extinction by man and his activities.
Looks at several endangered North American species such as bowhead whales, Florida panthers, long-nosed bats, and Caribbean manatees, focusing on recent conservation efforts.
Explains the reasons why southern sea otters came close to extinction, describes the efforts of scientists and environmentalists to create safe havens in which the otters could survive and thrive, and looks at some of the challenges faced during the efforts to rebuild the otter population.
Was it too late to save the grizzly bear? For hundreds of years, this amazing creature had lived peacefully in North America. Yet by 1935, years of land encroachment and hunting had pushed the animal to the brink of extinction. Would people find a way to help the grizzly bear survive?.
Explains the reasons why black-footed ferrets came close to extinction, describes the efforts of scientists to capture some of the few remaining wild ferrets and breed them in captivity, and discusses the challenges of reintroducing the ferrets to their natural habitats.
Provides descriptions of physical characteristics and habits of some of the most at-risk mammals in the world, with explanations of why they are endangered and how they can be protected.
