including emus, an ocelot, a caracal, siamang gibbons, and golden lion tamarins. Next to the Wallaby Walkabout is a rectangular display called "Feel the Difference", with three vertebrate charts (reptile, fish, and amphibian), and an invertebrate chart created by Frank Schaffer Publications. Continuing on the trail will take you through Harmony Farm, featuring many farm animals, a petting zoo, and demonstrations on farming and agriculture oriented toward children. Hunt Bass Hatchery House ("Ruby's House") The Hunt Bass Hatchery Caretaker's House was built in 1936 and is located in the Phoenix Zoo grounds. Following the Great Depression, Governor George W. P. Hunt (Arizona's first elected governor) commissioned a bass fish hatchery to be established in Papago Park during 1932. The hatchery was built as a Works Progress Administration (WPA) project. The hatchery, operated by the Arizona Game and Fish Department, was a success, and was in operation until 1959 (as it was considered obsolete by this time); around this time, the state of Arizona ceded the majority of Papago Park to the City of Phoenix. The City of Phoenix leased the hatchery grounds, including its man-made lakes, to the Arizona Zoological Society in 1962 to establish the Zoo. The hatchery property was listed in the National Register of Historic Places on 23 January 2003, reference: #02001723. The Caretaker's House was renovated in the late 1990s, and is now known as "Ruby's House", as it is dedicated to the memory of Ruby, the famous painting elephant at the zoo (see her biography below). Ruby's House has become a popular venue for weddings, receptions, and other special events. Other attractions In addition to the trails, the zoo has several specialty attractions. Stingray Bay was opened in November 2006, and included more than 30 cownose rays and southern stingrays in a 15,000 gallon "touch tank." The "touch tank" lets visitors to touch the rays, whose barbs have been trimmed for safety. The exhibit is now permanent after installation of equipment to adjust water temperatures in the summer. In October 2007, bamboo sharks were added to the exhibit. An endangered species carousel is featured by the Leapin' Lagoon Splash Pad. The Safari Train provides a nonstop guided tour of the zoo. Camel rides. Giraffe Encounter ZooLights – an annual December lighting show, which began in 1991. Programs The zoo has a wide array of youth programs and animal encounters, including field trips, Night Camp, an