Animals live in almost every part of the world.  They are found in hot  and cold places. They live deep in the ocean and near the tops of high mountains.  Scientists have found that there are about a million different kinds of animals in the world.  The tiniest animals are too small for the eye to see.  Thousands of them could swim in a teaspoonful of water. The biggest animal, the blue whale, weighs more that one hundred tons.

Yet all animals, no matter how different or strange they may seem, are alike in some ways. The bodies of animals are fitted for many tasks which help keep them alive.  Animals use their bodies to get food, to protect themselves from their enemies, and to bear young.  One great difference between plants and animals is the way they get their food.  Animals eat plants or other animals.   Most plants are able to make their own food out of substances they find in the air and soil.  Many animals can see, hear, smell, feel, and taste as man does. Sometimes their senses are far keener than man’s, but sometimes they are almost entirely lacking.

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