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New Study Confirms Rats Have Empathy (But Do We?)

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New Study Confirms Rats Have Empathy (But Do We?)

By Matthew Liebman, Animal Legal Defense Fund (ALDF)
December 2011

Rats have it rough in our legal system. A judge in Utah recently dismissed cruelty charges against a man who videotaped himself eating a live baby rat and whose court papers argued that rats "should have no legal protections" because “for centuries [they] have been a scourge to humanity.” Most anti-cruelty laws exempt “pest control,” so even unnecessarily painful methods of exterminating rats are typically legal. And the federal Animal Welfare Act, which sets minimal standards for the treatment of animals used in research, exempts rats from its protections.

Yet despite the seeming inability of some judges, lawmakers, regulators, and researchers to find empathy for rats, a new study confirms that rats themselves empathize with each other and will forego personal rewards to liberate their suffering friends.

A study published in Science last week describes an experiment by researchers at the University of Chicago, in which two rats were placed in a cage, one trapped in a small restraint tube. In the vast majority of sessions, the unrestrained rat would become agitated at the alarm calls of his distressed cagemate, then figure out how to open the door of the restrainer to free the trapped rat. To ensure that the liberation was intentional and that the free rats were not just fiddling with the door of the restrainer, the researchers controlled with empty restrainers and restrainers containing stuffed toy rats; the free rats showed little interest in the restraint devices that did not contain fellow live rats, leading the researchers to conclude that the “rats were motivated to move and act specifically in the presence of a trapped cagemate.”

Not only were the rats motivated to act empathically, they also made personal sacrifices to do so. To test the relative value of empathic behavior, the researchers placed chocolate chips in a separate restrainer to see if the free rat would prefer to get these treats instead of helping his cagemate. In a majority of cases, the unrestrained rat would rescue his friend and share the treats. In a few tear-jerking cases, free rats actually carried chocolate chips over to their newly liberated friend and placed it before him, “as if delivering it,” according to one of the researchers.

Studies like this one confirm remarkable behaviors in animals, but unfortunately, we often draw the wrong lessons from them. Instead of accepting that animals—even rats—are empathic, vulnerable, and convivial creatures who deserve to flourish in their own contexts, we again reduce them to objects of study. Already, scientists are clamoring to confirm this study and expand on it with yet more animal research. At what point will we have learned enough about animals to realize that they deserve to be free? When will we finally discover sufficient empathy in the human species to remove the restraints that keep millions of animals confined in laboratories?

In the meantime, each of us can show empathy toward rats by purchasing only products that are not tested on animals, donating only to charities that don’t support experiments on animals, and practicing humane rat control.