Wild elephants walking along a trail stop and spontaneously try to protect and assist a weak and dying fellow elephant. Laboratory rats, finding other rats caged nearby in distressing circumstances, proceed to rescue them. A chimpanzee in a zoo loses his own life trying to save an unrelated infant who has fallen into a watery moat.
The examples above and many others, argues Dale Peterson, show that our fellow creatures have powerful impulses toward cooperation, generosity, and fairness. Yet it is commonly held that we Homo sapiens are the only animals with a moral sense. This rigorous and stimulating book challenges that notion and shows the profound connections—the moral continuum—that link humans to many other species. Understanding the moral lives of animals offers new insight into our own.