What are wombats? A guide to Australia's den-digging marsupial

Wombats are furry, nocturnal marsupials found only in Australia.

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Unlike kangaroos and koalas, most wombats actually do spend much of their time down under — in burrows that sometimes include up to ten entrances and tunnels up to 325 feet (100 meters) long.

That's a lot of digging for an animal about the size of a medium dog with short legs, but also wide feet and sharp claws. Wombats can be up to 3 feet long and 88 pounds (40 kg). They have relatively flat faces, small ears and large noses.

If multiple wombats share the same burrow, also known as a warren, it's most likely to be several females.

Sometimes, after her young are raised, a mother wombat will depart her family burrow to join another, leaving the underground estate to her young, who may still be too small to dig their own, according to the Australia-based nonprofit Wombat Foundation.

When they're above ground, wombats spend much of their time grazing on grass, their primary food. They are herbivores, using their claws only for digging.

In 2021, scientists at Cornell University and other institutions published results of their study on why wombats are the only animal known to poop out cube-shaped scat. It turns out to be related to the shape of their intestinal muscles.

There are three species of wombats. One of those, the northern hairy-nosed wombat, is critically endangered.

During wildfire season in Australia, other species have been known to shelter in fireproof wombat burrows — not herded, but tolerated there. Last year, scientists published observations from trail cameras of bush rats, monitor lizards, painted button-quails and other animals sometimes using wombat dens.

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