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9:30 PM | February 21, 2013
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One smart bird Photo by Joachim S. MüllerA new experiment found crows and ravens have a sense of fairness, just like people and dogs. People, primates and dogs all react negatively when others get a better reward for doing the same work. Now a small study has found that crows and ravens dislike unfairness, too--the first time research has shown non-mammals react to inequity. Knowing which animals do and don't seem to notice unfairness (cleaner fish, for example, don't notice) helps scientists […]

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