I happened to see these comments. When I visited Racine Zoo in 2014, here's what I saw:
This is essentially a mixed bag of animals with Great Cat Canyon's 3 exhibits (Amur Tiger, African Lion, Canadian Lynx) on one side and two functional primate cages on the far side of the building featuring White-handed Gibbons and Black-handed Spider Monkeys. Indoors are enclosures for hybrid Orangutans (zero outdoor access!) plus species such as Blue-eyed Black Lemur, Emperor Tamarin, South American Coati, Fossa, Hoffman’s Two-toed Sloth and Yellow-crowned Amazon Parrot.