In 1986, five-year-old Levan Merritt fell twenty feet into the gorilla enclosure of England’s Jersey zoo. As parents and onlookers cried out for help, a full-grown male silverback, named Jambo, placed himself between the motionless boy and several other gorillas. Then he began to gently stroke the child’s back. When Levan began to cry, Jambo led the other gorillas into their own enclosure as zoo-keepers and an ambulance driver came to the rescue. Thirty years later Levan still talks about Jambo the gentle giant—his guardian angel who had acted in a shockingly unexpected way, changing his perception of gorillas forever.

Elijah…