I once adopted a chicken named Gloria who had outwitted a neighborhood of angry gardeners (chickens love scratching up plants) and animal control officers for almost a year. After joining my backyard flock, she lived in relative luxury for the rest of her days, enjoying a chicken-size swing set...

Teddy was never meant to have a name. He was born a number, just one of tens of thousands of dogs—mostly beagles like him, chosen for their trusting, docile nature and compact size—bred in the United States for use in experiments each year. Teddy was meant to live and die in a laboratory, without...

When a young Jane Goodall entered the forests of Tanzania to study wild chimpanzees, neither she nor those supporting her work imagined the influence she would have. Today, Goodall—Ph.D., DBE, founder of the Jane Goodall Institute, and United Nations Messenger of Peace—is recognized not only as a...