Topic - San Diego Zoo Wildlife Alliance

San Diego Zoo Wildlife Alliance is a nonprofit organization headquartered in San Diego that operates the San Diego Zoo and the San Diego Zoo Safari Park. Founded in 1916 as the Zoological Society of San Diego under the leadership of Harry M. Wegeforth, the organization claims the largest zoological society membership in the world, with more than 250,000 member households and 130,000 child memberships, representing more than half a million people. not all of which are displayed publicly. - Source: Wikipedia