Longest-living mammals – Graph it! – human beings – Brief Article – Statistical Data Included

All living things eventually grow old and die–a process called senescence. But for reasons scientists still don’t understand, humans age more slowly than other mammals (animals that nurse their babies with milk). The average human life span in an industrialized country is between 75 and 85 years; a typical dog lives 20 years, while mice survive about 4 years.

This graph shows the life spans for some of the longest-living mammals. By how many years can the average killer whale outlive a hippo? Do you think aging impacts other animals in the same way it does human beings?

ANIMAL AVERAGE LIFE SPAN IN YEARS

Human 60-80 *

Asian 70-75

Elephant

Killer 50-70

Whale

Hippopotamus 40-50

Rhinoceros 20-50

* Industrial and non-industrial nations combined

SOURCE: THE USBORNE BOOK OF ANIMAL FACTS, SCHOLASTIC, INC.;

COPYRIGHT 2001 Scholastic, Inc.

COPYRIGHT 2001 Gale Group

You May Also Like

Carbon cleanup

Carbon cleanup When you flip on the television, you are using electricity. Much electricity comes from power plants, where fuels–such as…

The Eco-facts – includes articles on wildlife, national parks, forests, water, wastes, and population

The Eco-facts – includes articles on wildlife, national parks, forests, water, wastes, and population – 1994-1995 Environmental Almanac Ly…

Killers Without Cures

Killers Without Cures – lethal viruses Nicole Dyer In the last three decades more than 50 lethal viruses (microscopic particles tha…

Beaches Going, Going, Gone?

Beaches Going, Going, Gone? – U.S. shoreline is eroding Chana Stiefel AMERICA’S BEACHES ARE VANISHING. SHOULD WE FIGHT TO SAVE THEM…