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Rats give more generously in response to the smell of hunger

Photo by: Phys.org

How do animals that help their brethren manage to prioritize those most in need? A study publishing March 24 in the open-access journal PLOS Biology by Karin Schneeberger and colleagues of the Universities of Bern in Switzerland and Potsdam in Germany, shows that rats can use odor cues alone to determine how urgently to provide food assistance to other rats in need.

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