Natural observations of animals in the wild and research in laboratories show us that a number of "building blocks" of moral behavior can be found in animals. For instance, many animals exhibit behaviors that benefit other members of their species. Such prosocial behaviors (meaning behaviors that are good for others), like helping each other and caring for offspring, have been seen in rodents and primates. Rats will help other distressed rats that have been soaked with water, and it will also choose to help a cage mate that is in distress before obtaining a food reward. Chimpanzees will help each other and share with each other, but only when they benefit from the sharing, as long as the costs are minimal and the needs of the other chimpanzees are clear. Chimpanzees also collaborate and form alliances in fights or when hunting. Capuchin monkeys have even been shown to react in a negative way when they see other monkeys being treated unfairly.

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