About CZS

The mission of the Chicago Zoological Society is to inspire conservation leadership by connecting people with wildlife and nature.
Since the opening of Brookfield Zoo in 1934, the Society has had an international reputation for taking a cutting-edge role in animal care and conservation of the natural world. Among its historical firsts are indoor multispecies exhibits, zoo nutrition residencies, methods for animal husbandry, and medical care that includes successful brain surgery for a gorilla.
Today, there is an increasing need for conservation leaders to guide, teach, and motivate people to protect the world’s threatened wildlife and ecosystems. In addition to conservationists, the Society inspires and engages children, students, teachers, and others among the general public to make a positive impact on the natural world around them. From protecting regional wilderness to creating environmental stewardship through zoo interactions and educational opportunities, from guiding future scientists to pioneering global conservation efforts, the Society sits at the apex of care for animals and their habitats.
In building its legacy of animal care and compassion, the Society has launched two new centers: the Center for Conservation Leadership and the Center for the Science of Animal Welfare (CSAW). These innovative learning and research hubs will integrate a wide variety of disciplines, changing the way animal conservation issues are considered and advancing the science of “animal-directed” care around the world.
Training for Release Into Wild
Endangered Wolf Part of Recovery Efforts
With only 58 Mexican gray wolves living in the wild in New Mexico and Arizona, a 4½-year-old female Mexican gray wolf is leaving Brookfield Zoo, which is managed by the Chicago Zoological Society, to prepare to enter the wild. The release to the wild would help bolster the population of this endangered species.
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Investing time and resources in the future leaders of conservation.
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Dr. Randy Wells leads the longest running dolphin research program in the world.
Behavioral Endocrinology program finds innovative ways to promote reproductive success of threatened species.
Participating in population management and conservation program for selected species at North American zoos.
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Experience Brookfield Zoo the way the keepers do!
Innovative new Center designed to advance the science of “animal-directed” care at Brookfield Zoo.
CZS and conservation on a local scale.
Chicago Board of Trade Endangered Species Fund attracts dozens of innovative research projects.
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