1922
1922: Henry Snow, naturalist, establishes the Snow Zoo by Lake Merritt after 1919 – 1922 Snow Expedition to Africa for the Oakland Museum. Sidney Snow, son, and other family members assume the care and feeding of the growing zoo.
1925-1927
Noise and expansion concerns drive Henry to gift many of the animals to the City of Oakland. Animals are moved to Sequoia Mountain Park - now Joaquin Miller Park. Sidney continues to care for remaining animals by Lake Merritt.
1934
Sidney convinces the Bank of Italy to assume the mortgage for Durant Park (current Oakland Zoo property). Sidney moves his animals to the park and opens the zoo.
1939
After many of the animals die at the City’s Sequoia Mountain Park, Sid advocates and wins the support of Oakland Citizens to return the animals to Sid. He forms the Alameda County Botanical and Zoological Society as a support organization.
1950
Sid advocates that Durant Park become part of the State Park system; Joseph Knowland, then Chairman of the California State Park Commission, supports the effort and secures Knowland Park for the State.
1961
New elephant habitat for Effie, the elephant, becomes the first significant construction for the Zoo.
1965
The Baby Zoo opens designed for guests to meet and greet baby animals.
1982
The City of Oakland gives the Society the responsibility of managing the entire Park and Zoo.
1982
William Penn Mott, Jr., becomes Director of the Society, leading the Zoo into a new era of growth and development.
1985
Joel J. Parrott, DVM, becomes Executive Director, implementing a 6-phase development plan over the next 20 years to completely renovate the Zoo.
1987
The Zoo's Education Department finishes construction. Providing school and community groups with on-site classes and a ZooMobile outreach program.
1988
Oakland Zoo receives accreditation from the Association of Zoo and Aquariums.
1989
The Zoo completes "Mahali Pa Tembo", meaning the Place of the Elephant, nationally recognized for its natural elephant habitat setting.
1991
New Gibbon Island provides a spacious, lush island for white-handed gibbons.
1992
African Lion habitat "Simba Pori" (Swahili for "Lion Country") opens, providing a 1.5-acre natural savanna and woodland setting.
1996
Malayan Sun Bear habitat completed becoming one of the largest sun bear habitats in North America.
1998
African Savanna area opens, highlighting eighteen animal species and over seventy-five plant species from South and East Africa.
1999
The 17,500 square-foot Maddie's Center for Science and Environmental Education opens. Providing new opportunities for indoor and outdoor education throughout the Zoo.
2001
New Main Entrance and pavilion opens including new gifts shop, restaurant, and upgraded guest entryway to meet the demand of growing attendance.
2005
Wayne and Gladys Valley Children's Zoo catered to the young inquisitive mind is completed. The most extensive renovation and construction in the Zoo's history.
2006
Oakland Zoo launches Zoo-to-Community, to provide free and discounted Zoo admission and transportation to qualified schools and organizations.
2007
Arroyo Viejo Creek restoration project commences, intending to continuously remove non-native species through the creek clean-up program and create outdoor classroom spaces.
2009
Baboon Cliffs opens featuring a cascading waterfall, climbing structures, and spacious area for the baboon troop to roam.
2010
Australian-themed “Wild Australia” features wallaroos and emus accessible only via the Outback Express Adventure Train.
2011
“Quarters for Conservation” launches, challenging guests to actively participate in conserving wildlife by casting their vote to decide which project will receive their donation.
2012
State-of-the-art, 17,000 square foot veterinary hospital, opens becoming the largest wild animal veterinary facility in Northern California.
2013
Oakland Zoo Biodiversity Center opens, serving as a breeding, research, and education facility devoted to the conservation of endangered wildlife.
2013
The Steve and Jackie Kane Condor Recovery Center opens specifically designed to treat large endangered and injured birds.
2017
The East Bay Zoological Society is renamed the Conservation Society of California reflecting the Zoo's evolving purpose and mission in its commitment to conservation.
2017
The ADA-accessible, all-electric gondola opens to transport guests to the California Trail.
2018
Oakland Zoo unveils a long-awaited 56-acre California Trail focussing on California's rich biodiversity and native wildlife.
2021
Nik Dehejia becomes the newest CEO of Oakland Zoo.
2022
Oakland Zoo celebrates Centennial Year. The future is bright at Oakland Zoo. We have big dreams and plans that will transform the Zoo and put us on the map as one of the most recognized Zoos in the country, especially for our humane treatment of animals and worldwide conservation efforts.