This world-renowned zoo is home to the world''s first Hippoquarium, an underwater viewing area where patrons can watch the daily activity of a hippopotamus family. The zoo exhibits more than 4000 animals, including polar bears, elephants, cheetahs, snow leopards, orangutans, gray wolves, gorillas, African dogs This world-renowned zoo is home to the world''s first Hippoquarium, an underwater viewing area where patrons can watch the daily activity of a hippopotamus family. The zoo exhibits more than 4000 animals, including polar bears, elephants, cheetahs, snow leopards, orangutans, gray wolves, gorillas, African dogs etc.