The relationship between humans and mountain lions has always been uneasy. A century ago, mountain lions were vilified as a threat to livestock and hunted to the verge of extinction. In recent years, this keystone predator has made a remarkable comeback, but today humans and mountain lions appear destined for a collision course. Its recovery has led to an unexpected conundrum: Do more mountain lions mean they're a threat to humans and domestic animals? Or, are mountain lions still in need of our help and protection as their habitat dwindles and they're forced into the edges and crevices of communities to survive?

Mountain lion biologist and expert Mark Elbroch welcomes these tough questions. He dismisses long-held myths about mountain lions and uses groundbreaking science to uncover important new information about their social habits. Elbroch argues that humans and mountain lions can peacefully coexist in close proximity if we ignore uninformed hype and instead arm...