Scientific research shows that many animals are very intelligent and have sensory and motor abilities that dwarf ours. Dogs are able to detect diseases such as cancer and diabetes and warn humans of impending heart attacks and strokes. Elephants, whales, hippopotamuses, giraffes, and alligators use low-frequency sounds to communicate over long distances, often miles; and bats, dolphins, whales, frogs, and various rodents use high-frequency sounds to find food, communicate with others, and navigate. Many animals also display wide-ranging emotions, including joy, happiness, empathy, compassion, grief, and even resentment and embarrassment. Many animals display profound grief at the loss or absence of a relative or companion. Do animals marvel at their surroundings, have a sense of awe when they see a rainbow, or wonder where lightning comes from? Sometimes a chimpanzee, usually an adult male, will dance at a waterfall with total abandon. Ravens and many other animals live by social norms that favor fairness and justice. And outside of Buenos Aires, Argentina, a dog rescued an abandoned baby by placing him safely among her own newborn puppies. Amazingly, the dog carried the baby about 150 feet to where her puppies lay after discovering the baby covered by a rag in a field.