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Lately, social scientists have begun to ask if culture is found just in humans, or if some animals have a culture too. When we speak of culture, we mean a way of life a group of people have in common. Culture includes the beliefs and attitudes we learn. It is the patterns of behavior that help people to live together. It is also the patterns of behavior that make one group different from another group. Our culture lets us make up for having lost our strength, claws, long teeth, and other defenses. Instead, we use tools, cooperate with one another, and communicate with language. But these aspects of human behavior, or "culture", can also be found in the lives of certain animals. We used to think that the ability to use tools was the dividing line between human beings and other animals. Lately, however, we have found that this is not the case. Chimpanzees can not only use tools but actually make tools themselves. This is a major step up from simply picking up a handy object and using it.