Assertion: black footed ferret | /r/HasProperty | left in the world
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text: In 1987 with only 18 black-footed ferrets left in the world, they were brought into captivity to start a successful breeding program and are now being bred at Louisville Zoo, Toronto Zoo, The Phoenix Zoo, Smithsonian's Conservation & Research Center, Cheyenne Mountain Zoo, the National Black-Footed Ferret Conservation Center and an outdoor facility in New Mexico.