From the top of Shifting Sands dune in the Serengeti Plain of Africa a million mammals are in motion ... Both sweat glands and mammary glands produce water, salts, and proteins, all of which ...

The sloth is the world's slowest mammal, so sedentary that algae grows ... and fruit from the trees and get almost all of their water from juicy plants. Sloths mate and give birth while hanging ...

The playful North American river otter is equally at home in the water and on land. It makes its home in a burrow near the water's edge, and can thrive in river, lake, swamp, or estuary ecosystems.

With a beaver’s tail, webbed feet, and a duck’s bill, platypuses are one of the world’s strangest-looking creatures. They are ...

Such herds rival the Serengeti’s teeming masses of wildebeests for the title of the world’s most massive—and awe-inspiring—mammal migration ... But in 2007, National Geographic Explorer ...

The hump stores up to 80 pounds of fat, which a camel can break down into water and energy when sustenance is not available. These humps give camels their legendary ability to travel up to 100 ...

They have small ears, unlike the earless or hair seals. Although they breathe air, seals are most at home in the water and may stay at sea for weeks at a time eating fish, squid, birds ...

This story appears in the August 2010 issue of National Geographic magazine ... their jaw joints to hear in the air instead of water. Mammals turned out to be among the most successful of these ...

This story appears in the March 2019 issue of National ... to the water hole. Evaporation from the mud and water also aids temperature regulation—vital because elephants, unlike many mammals ...

The Hoffman's two-toed sloth is one of the world's slowest mammals—so sedentary that algae ... and fruit from the trees and get almost all of their water from juicy plants.

Rhinos are also wallowers. They often find a suitable water hole and roll in its mud, coating their skin with a natural bug repellent and sun block. Rhinos have sharp hearing and a keen sense of ...

This story appears in the September 2010 issue of National Geographic magazine ... We talk about the age of dinosaurs or the age of mammals, but since the first animal climbed onto land, every ...