Rats will choose to liberate a trapped companion even when offered a reward of chocolate as an alternative, report researchers.
Source: http://www.cosmosmagazine.com/news/5070/social-rats-trade-chocolate-cagemates
Diane Kruger Dido Diora Baird Dita Von Teese Dominique Swain Donna Feldman Drea de Matteo Drew Barrymore
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