You've viewed all of your free items on Creativity. To register, get added benefits and unlimited access to articles, Become a Member. Already a Member? Sign in. Home Print (image) San Francisco Zoo Another year, another inventive campaign from the San Francisco Zoo and BBDO West to rattle potential customers' cages. ( Become a member We are glad you are enjoying Creativity. You have reached your seventh and last free item. To get uninterrupted access and additional benefits, become a member today. Become a Member Already a member? Log in.