Going to put my money on the rodent being Agouti as they're small and can fit into that exhibit space. Also it's interesting that they'll have Legends nearly split down the middle for South America and Asia with this renovation (South America in red, Asia in blue):We know officially know that the Madagascar Building will become the Rainforest Building. Sakis, tamarins, birds, tortoises, and a South American rodent species. I think this is to make Legends of the Wild a South American and Asian exhibit area. Especially since Africa is getting bigger. We could someday see lemurs up there in the future to fit in geographically.
That leaves a question - Are there plans to change the mara and nocturnal building? Because if the species coming to the jaguar exhibit really is an Amur leopard, that leaves a section of South America right in the middle of Asia.





