The Rat Room

Of course we already knew that.
But scientists put it to the test and have found rats to have empathy and pro-social behaviour. In the study, they trapped a cage mate in a tube, while the free rat had the choice to release the cage mate or move on to something else. On average the free rat, released his cage mate before doing anything else. The article goes more into details. There is also a video to show the difference the rats faced with a trapped cage mate, a trapped stuffed toy or nothing in the tube.
http://www.sciencemag.org/content/334/6061/1427.full.html

Over the years, I’ve experienced my share of rat empathy and social capabilities. I remember once, my old girl Bijou was being harassed by 3 young bucks. My Mielle out of nowhere during out time must have sensed Bijou’s worried signals because she bounded back to the cage and found Bijou at the bottom. Mielle pushed the big bucks away and convinced Bijou to enter a tube by nudging her gently into it. When Bijou was in it, one end was already blocked, Mielle dutifully placed herself at the open end, daring any of the young boys to come near. That day, I knew just how special rats truly are.