Amazon World have never solely focused on south american rainforest species. They have always held greater flamingo and a number of touracos, and from the start held a small group of ruffed lemurs, burmese brown tortoises, leopard cats and indian fruit bats. A few years in and they aquired fennec foxes (which died in a fire, but were replaced), and meerkats. Not to mention the Black-footed penguins.
The educational message might be about rainforest conservation, but they have never exclusively exhibited South American or indeed rainforest species.