To be fair, these enclosures are alongside enclosures for Aye-Aye, Aloatran Gentle Lemur and the Clore Pavillion which has lots of unusual species in it
This exhibit, called "Happy Families" as CZJimmy mentioned, was built in 2003, and originally included the exhibits for the Asian Short-Clawed Otters, Meerkats and Tamarins and Marmosets, uses the different social structures in those species as educational theme. In my opinion this educational line is not emphasized properly ...
I'll upload some photos about the otter exhibit soon ...
To be fair, these enclosures are alongside enclosures for Aye-Aye, Aloatran Gentle Lemur and the Clore Pavillion which has lots of unusual species in it