This month, Americans will choose leaders in government, including the president. In the U.S., elected leaders make decisions that affect the country’s people. There are leaders outside government too—from your school’s principal to the coach of your sports team.
But leaders don’t just exist in human society. All kinds of animals live in groups, from bees to elephants. Group life helps animals defend against predators, hunt, and share food. Sometimes, groups of animals make decisions together (see Group Decisions, below). Other times, animal groups have leaders that call the shots, such as where to travel to find food.
Scientists have been studying animal leadership for decades. Their research sheds light on how human societies evolved and how groups of people make decisions today. “It’s interesting to see the different ways that animals solve the same problem,” says Robin Morrison, a researcher at the Dian Fossey Gorilla Fund in Rwanda. “How can they survive in a group?”