The Leadbeater's or "fairy possum" is Victoria's iconic faunal emblem. This marsupial lives in ancient tree hollows in Toolangi and the Central Highlands and when fully grown can fit in the palm of a human hand.
The Christmas Island Pipistrelle, Pipistrellus murrayi , has not been declared extinct under the EPBC Act but the species has not been heard or sighted since a team of researchers was sent to Christmas Island in 2009.
The Glossy Black-Cockatoo, Calyptorhynchus lathami, is the smallest of the five black-cockatoos. Populations have declined, with local extinctions and range contraction mainly caused by habitat clearing.
The Quokka, Setonix brachyurus, dubbed "the World's Happiest Animal", is a small marsupial, about the size of a domestic cat, found on some smaller islands off the coast of WA and in the state's South West.
The Northern Hairy-nosed Wombat is one of the world's most critically endangered species. It is the largest herbivorous burrowing mammal in the world and disappeared rapidly after the introduction of sheep, cattle and rabbits into Australia, due to competition for grass (their nutrition is based on almost 100% grass).