I've seen dwarf mongoose in a nocturnal house, they were just as active as they are in a diurnal exhibit. I agree that the others shouldn't be exhibited like that though.
That's correct, none are actually nocturnal. I was told that it was just the name given to the building. I would like to see rarer species in there rather than your normal Pygmy Marmosets, Speckled Pigeons, etc.
