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Ants don't sleep at all.

The burrowing bettong is a nocturnal, vulnerable species. Both humans and predators are the main contributors to the decline of the burrowing bettong. The burrowing bettong resides in Australia and the islands of Barrow, Bernier, and Dorre. There are no natural predators on Barrow Island, but the population of burrowing bettongs on Barrow Island is about 5,000 animals, and this is the only secure population. “Boodie” and “Rat Kangaroo” are other common names for the burrowing bettong. There are efforts being made to bring the species onto the mainland of Australia.