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Zookeepers named the two male joeys Mallee and Cliff after a national park about 490 miles west of Sydney, where the creatures were once found in abundance, and where they are now being reintroduced. Both animals are four months old.

Bilbies are believed to have inhabited Australia for up to 15 million years and were once found across 70% of Australia's landmass, according to Bush Heritage Australia.

They use their strong forelimbs and claws to build tunnels, which provide shelter from Australia's sometimes fierce heat as well as predators.