Interesting to see which species are kept nowadays in the Nocturnal House of TWP. I've been there ten years ago and it was one of the best nocturnal houses I've ever seen.
If I remember it correctly, there were hare-wallabies in one of the first enclosures with some rodents nearby, then quolls (which I unfortunately didn't see) and brown bandicoots, and bats and small carnivores in the last part of the Nocturnal House.
The following mammals were kept in 2007 in the Nocturnal House of TWP (I have a list of the mammals I've seen in zoos):
Short-beaked Echidna
Fawn Antechinus
Common Planigale
Northern Quoll
Northern Brown Bandicoot
Northern Sugar Glider
Arnhem Land Brushtail Possum
Spectacled Hare Wallaby
Ghost Bat
Black Flying-Fox
Least Blossom Bat
Brush-tailed Rabbit-Rat
Golden-bellied Water Rat
Grassland Mouse
Black-footed Tree Rat
Northern Hopping Mouse
Carpentarian Rock Rat
I can't recall seeing birds, reptiles or frogs, but some flyers I have of that time include photos of Tawny Frogmouth, Stone Curlew and Green Tree Frog.