By David Grimm
Hercules and Leo are only 11 years old, but they’ve already come close to retiring twice. The two chimpanzees, born and raised at Louisiana’s New Iberia Research Center, became lab animals at the State University of New York in Stony Brook in 2011. There they shared a three-room enclosure, where scientists inserted small electrodes into their muscles to study the evolution of bipedalism. In 2013, they were the subject of an unusual legal gambit. An animal rights group sued to declare the pair legal persons and retire them to a Florida sanctuary, but the effort failed.
Two years later, Hercules and Leo returned to New Iberia, where they mingled with other chimps in outdoor domes with ladders and ropes. But retirement to a sanctuary, where they could climb real trees and have more room to roam, again seemed imminent: The U.S. government had just effectively ended invasive work on chimpanzees, and many observers expected all lab chimps to move to sanctuaries in short order. Yet today, Hercules and Leo, along with nearly 600 of their kind across the country, remain at research facilities. It’s unclear when—or whether—they’ll leave.
In the past 2 years, only 73 chimps have entered sanctuaries, and the slow pace has heightened tensions between the laboratory and sanctuary communities. There’s plenty of blame to go around. Labs have dragged their feet, sanctuaries haven’t expanded quickly enough, and the government itself didn’t have a concrete plan for retirement, despite setting the process in motion in the first place.
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