They have 15 different species on display, ranging from the small but deadly Poison Dart Frogs, all the way up to the massive African Bullfrog. Interactive displays enhance the experience for both adults and children, and provide information on things like vocalizaitons, metamorphosis, and the dreaded Chytridiomycosis.
The exhibit is in Milwaukee until January 31st, if you happen to be in that particular area. Then it looks like its moving out to the Museum of the Rockies in Montana. A full schedule of the exhibit is available at Peeling Productions.