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Tasmanian devil
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What is a Tasmanian devil?
The Tasmanian devil (Sarcophilus harrisii) is a carnivorous marsupial native to the Australian island state of Tasmania. They are named for their devilish expressions, which come from their husky snarls, strong teeth and jaws, and often bad temper. These stocky animals have heavy forequarters, weak hindquarters, and a large, squarish head and can weigh up to 12 kg (26 pounds). Tasmanian devils are related to quolls and are mainly scavengers, feeding on carrion. They became extinct on the Australian mainland thousands of years ago.
Since 1996, the Tasmanian devil population has declined due to devil facial tumor disease (DFTD), a contagious cancer that causes large tumors around the head and mouth. This disease interferes with the animal's ability to eat, leading to starvation and death. The Tasmanian devil was listed as an endangered species in May 2008, and there may be only 10,000 wild individuals remaining.
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Where do Tasmanian devils live?
The Tasmanian devil is native to the Australian island state of Tasmania. They became extinct on the Australian mainland thousands of years ago, possibly due to the introduction of the dingo.
In 2020, wildlife officials began reintroducing healthy Tasmanian devils to a wildlife reserve in New South Wales.
The Tasmanian devil population has declined by more than 50% since 1996 due to devil facial tumor disease (DFTD), a contagious cancer that causes large tumors around the head and mouth. There may be only 10,000 wild individuals remaining.
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Why are Tasmanian devils called marsupials?
Tasmanian devils are classified as marsupials because they are mammals characterized by premature birth. After birth, the newborn continues to develop while attached to the nipples on the mother’s lower belly.
The pouch, also called a marsupium, covers the nipples. The young remain attached to the milk-giving teats for a period that corresponds roughly to the latter part of fetal development in placental mammals.
Tasmanian devils are native to the Australian island-state of Tasmania. They are related to quolls and are classified in the family Dasyuridae. They are carnivorous marsupials about the size of a badger with powerful jaws and teeth.
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What do Tasmanian devils eat?
The Tasmanian devil is a carnivorous marsupial native to the Australian island-state of Tasmania. As a scavenger, it primarily feeds on carrion, such as roadkill and dead sheep. The larvae of certain beetles are also a significant source of live food, though they have been known to attack poultry.
These stocky animals have heavy forequarters, weak hindquarters, and large, squarish heads. Their strong teeth and jaws help them consume their varied diet.
The Tasmanian devil population has declined since 1996 due to devil facial tumor disease (DFTD), a contagious cancer that interferes with their ability to eat.
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How do Tasmanian devils care for their young?
The Tasmanian devil, a carnivorous marsupial native to Tasmania, exhibits unique care for its young. After a gestation period of about three weeks, up to 20 or more eggs may be released, but only a few typically survive. The surviving young remain in the pouch for about five months, firmly attached to the mother's nipples, where they continue to develop. The pouch, which opens backward, has muscles that contract to close it, creating a secure environment for the developing offspring.
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What challenges do Tasmanian devils face in the wild today?
Tasmanian devils face significant challenges in the wild today, primarily due to devil facial tumour disease (DFTD), a contagious cancer that causes large tumors around the head and mouth. These tumors interfere with the animal's ability to eat, leading to starvation and death, usually within months of developing the disease.
Since 1996, DFTD has decimated the Tasmanian devil population, leading to a population decline of around 60 percent between 1996 and 2008. Current estimates suggest only about 10,000 wild individuals remain.
Conservation efforts include quarantine, captive breeding programs, and establishing healthy populations on nearby islands. In 2020, Tasmanian devils were reintroduced to the Australian mainland. The Tasmanian devil was listed as an endangered species in May 2008.
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Tasmanian devil, (Sarcophilus harrisii), stocky carnivorous marsupial with heavy forequarters, weak hindquarters, and a large squarish head. The Tasmanian devil is named for the Australian island-state of Tasmania, its only native habitat. Vaguely bearlike in appearance and weighing up to 12 kg (26 pounds), it is 50 to 80 cm (20 to 31 inches) long and has a bushy tail about half that length. The coat is mainly black, and there is a whitish breast mark; sometimes the rump and sides are white-marked as well. Gaping jaws and strong teeth, along with its husky snarl and often bad temper, result in its devilish expression. It is mainly a scavenger, feeding on carrion such as roadkill and dead sheep. The larvae of certain beetles are its major source of live food, but it has been known to attack poultry.
Tasmanian devils are related to quolls (catlike Australian marsupials, also called native cats); both are classified in the family Dasyuridae. The teeth and jaws of Tasmanian devils are in many respects developed like those of a hyena. The pouch, when relaxed, opens backward, but, when the muscles are contracted to close it, the opening is central. During the breeding season, 20 or more eggs may be released, but most of these fail to develop. In most cases just four young are produced after a gestation period of about three weeks; these remain in the pouch for about five months. Overall, female offspring outnumber males about two to one.
The Tasmanian devil became extinct on the Australian mainland thousands of years ago, possibly following the introduction of the dingo. In 1996 the number of Tasmanian devils living on Tasmania was estimated to be more than 150,000. From 1996 to 2007, however, this figure dwindled by more than 50 percent, and the adult population was thought to number between only 10,000 and 25,000.
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Since 1996 the Tasmanian devils living on Tasmania have been threatened by a contagious cancer called devil facial tumour disease (DFTD), which produces large, often grotesque tumours around the head and mouth. The tumours grow large enough to interfere with the animal’s ability to eat, resulting in starvation. This, in combination with the deleterious physiological effects of the cancer, leads to death, usually within several months of developing the disease. The origin and cause of the cancer is still of some debate; however, scientists speculate that it is caused by a unique line of infectious cells derived from Tasmanian devils and that the cells are transmitted when the animals bite one another, such as during mating battles or when scavenging for food. The Tasmanian devil’s immune system does not recognize the cancer cells as foreign and therefore does not attempt to kill them. Quarantine of healthy Tasmanian devil populations, captive breeding programs, and establishment of healthy populations on nearby islands are several ways in which scientists hope to save the Tasmanian devil from extinction, and in 2020 Australian wildlife officials began the first step of reintroducing the Tasmanian devil to the mainland by transferring about 30 healthy animals to a wildlife reserve in New South Wales. The Tasmanian devil was listed as an endangered species by Tasmanian government officials in May 2008.