Mammals, Mammal Pictures, Facts About Mammals

Mammal Features

Howling Mouse App

Meet the cutest, deadliest critter to have its own app! Now available in the App store.
Cause an Uproar

Big cats are quickly disappearing. Now is the time to act. Cause an uproar to save big cats today.
Big Cat Cub Pictures

The world’s top felines—including lions, tigers, cheetahs, and leopards—are slipping toward extinction. Browse this gallery of big cat cubs and learn more about the threats they face.
Endangered Animals Quiz

The loss of animal species is irreversible and potentially catastrophic, not to mention heartrendingly sad. Where do we stand? Face the facts with this quiz.
Chimp Pictures

Get better acquainted with our closest relatives in the animal kingdom.

Violent Monkey Takeover

"This doesn't look good," says a Nat Geo explorer as rivals menace a patriarch. Hours pass, blood spills, and power changes hands. Video.
Pictures: Bird Mummies "Fed" After Death, Stuffed With Snails

Some of the millions of ancient Egyptian ibis mummies were "fed" after death, scans reveal—the better to live through the afterlife.