Yes, the Diana monkeys are next to the lions. There are 5 grottoes/pits at the zoo, containing these mammals: grizzly bears, spotted hyenas, Hamadryas baboons, lions and Amur tigers. Within the lion and hyena grottoes, and separated via strings of hotwire and a moat, are painfully small grottoes for black-handed spider monkeys and Diana monkeys.
The five grottoes built in 1973 for the zoos opening day originally housed Polar bear, arctic fox,kodiak bear,cheetah,hamadryas baboon,mandrill,african lion,siberian tiger.
The current grizzly bear habitat home to polar bears actually had an underwater viewing station that you could go in to view the polar bears underwater. This was closed in the early 1990s for safety reasons.
