Portal:Mammals

Mammals

Mammals are a fascinating group of animals. You may know many of them, such as humans, dogs, whales, and bats. They have special traits that make them different from other animals. Mammals usually have fur or hair, give birth to live babies (though a few lay eggs), and feed their young milk.

There are many kinds of mammals—over 5,000 different species! They live in nearly every place you can think of, like forests, deserts, mountains, and oceans. Some mammals, like the elephant, are very big—about as heavy as a small car. Others, like the shrew, are tiny, smaller than your hand.

Mammals are important to the world around us. Some help plants grow by eating fruit and carrying seeds to new spots. Others help control the numbers of other animals. Learning about mammals helps us understand nature and how all living things are connected.

Studying mammals also helps us learn about ourselves, because humans are mammals too. By watching how other mammals live and change to fit their homes, scientists can find new ways to protect animals and their habitats. Mammals are not just interesting—they help keep our planet healthy.