The Tasmanian devil is a carnivorous marsupial of the family 'Dasyuridae'. Until recently, it was only found on the island state of Tasmania, but it has been reintroduced to New South Wales in mainland Australia, with a small breeding population. The size of a small dog, the Tasmanian devil became the largest carnivorous marsupial in the world, following the extinction of the thylacine in 1936. It is related to quolls, and distantly related to the thylacine. It is characterised by its stocky and muscular build, black fur, pungent odour, extremely loud and disturbing screech, keen sense of smell, and ferocity when feeding.

Gestation lasts 21 days, and devils give birth to 20–30 young each weighing approximately 0.18–0.24 grams (0.0063–0.0085 oz). Tasmanian devil young are variously called "pups", "joeys", or "imps". When the young are born, competition is fierce as they move to the pouch. Once inside the pouch, they each remain attached to a nipple for the next 100 days. The female Tasmanian devil's pouch, like that of the wombat, opens to the rear, so it is physically difficult for the female to interact with young inside the pouch.

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