Research News
10:00 am
Fri December 9, 2011

Rats Show Empathy, By Freeing Trapped Companions

Reporting in Science, researchers write of an experiment in which rats worked to open the cages of trapped rats, but not empty or dummy-filled cages. Author Peggy Mason discusses empathy in non-primates, and the value rats place on freeing a companion--about equal to that of a stash of chocolate chips.