Founded in 1927, the 67-acre Rio Grande Zoo, located in Albuquerque, New Mexico, is a facility of the Albuquerque Biological Park. After a branding change, the Albuquerque Biological Park dropped "Rio Grande" from the name: the zoo is now called ABQ BioPark Zoo. Some of the most popular of the over 200 species are seals and sea lions, chimpanzees, gorillas, orangutans, elephants, polar bears, giraffes, hippos, camels, tamarins, koalas, and many more. Sections of the zoo include Africa exhibit area, an Australia exhibit area, the "Cat Walk" and herpetology area. An endangered species carousel was added in 2016. A narrow-gauge railroad connects the zoo to the other facilities of Albuquerque Biological Park.