What is an animal?

                 Animals are one of the major groups of living things. The other two groups are plants and fungi.

                The cells of animals differ from plant cells because there is no hard cell wall. The cell contents are held together with a flexible membrane. Animals are not able to make their own food, but must obtain food from plants or fungi. Most animals are able to move about and to respond to changes in their environment.

About three-quarters of all living things are animals.

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