Mammals are animals with mammary gland, that is a class of vertebrateanimals that produce milk for infants. They are also characterized bywarm blooded bodies and the presence of hair or fur. Mammals have three characteristics: -they have breasts, -their skin with some exceptions (are covered with hair), and they breed with offspring. There aredifferent ways of living for the different species, some living above theground and some under the ground, some in the trees and some in wateror in air. When it comes to looking for food, mammals live almost everywhere. Some mammals live near human communities. These include mice and rats, which often feed on household waste. Most wild mammals can only live in their natural habitats. Mammals may be carnivores and herbivores or both. There are species that feed on carrion and dead animals, but with the exception of some species that eat special food such as Australian koala bear and lazy bear, which eat only a certain type of foliage, most mammals eat what they can find if they need to.
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