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Thylacine

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The thylacine, known scientifically as *Thylacinus cynocephalus*, was a unique carnivorous marsupial.

Thylacinus cynocephalus white background
Thylacinus cynocephalus white background

It is famously called the Tasmanian tiger due to the dark transverse stripes on its back.

Thylacine harris cropped
Thylacine harris cropped

Some also called it the Tasmanian wolf because it resembled a large canid, or dog-like animal. It was the only member of the genus *Thylacinus* to survive until modern times. This extinct predator once lived across the Australian mainland, New Guinea, and Tasmania. Understanding the thylacine helps scientists learn about how animals change to fit their environments.

Thylacine and Coyote skulls
Thylacine and Coyote skulls

As a predator, the thylacine functioned as a solitary ambush hunter.

Beutelwolfskelett brehm
Beutelwolfskelett brehm

This means it likely hid and waited to surprise its prey. It specialized in hunting small to medium-sized animals, such as birds and mammals. The animal possessed several unique physical traits to aid its lifestyle. Its jaws were very muscular and could open to an unusual 80-degree angle.

"Benjamin"
"Benjamin"

However, studies suggest its jaw was actually too weak to kill large livestock like sheep. It also had a stiff tail that extended smoothly from its body. This tail structure was similar to that of a kangaroo.

Thylacine size comparison
Thylacine size comparison

The thylacine was a marsupial, meaning it possessed a pouch for its young.

Thylacine cubs
Thylacine cubs

Interestingly, both males and females had pouches. In females, the pouch opened toward the rear of the body to rear the young.

ThylacineFetus
ThylacineFetus

Males possessed a scrotal pouch, which is a feature almost unique among marsupials. The name thylacine comes from the Greek words for "pouch" and "pertaining to." This name describes the animal's most defining biological characteristic. These pouches allowed the species to protect and nurture its offspring during early development.

The evolutionary history of the thylacine is a remarkable example of convergent evolution.

Thylacine and Coyote skulls
Thylacine and Coyote skulls

Convergent evolution happens when unrelated animals develop similar traits because they live in similar ways. The thylacine lived in the same ecological niche as dogs in the Northern Hemisphere. Because of this, it developed similar features like sharp teeth and a similar body shape. Despite these looks, it was not related to any placental mammals like wolves. It was part of the order Dasyuromorphia. This group includes the Tasmanian devil and other carnivorous marsupials. Scientists estimate that thylacinids split from other members of this order about 42 to 36 million years ago.

European explorers began documenting the thylacine in the 17th and 18th centuries.

Thylacine harris cropped
Thylacine harris cropped

In 1642, Abel Tasman reported seeing footprints of "wild beasts" in Tasmania. Later, French explorers in 1772 described seeing a "tiger cat." The first formal scientific description was provided by George Harris in 1808.

Thylacine harris cropped
Thylacine harris cropped

He originally classified it as a type of "dog-headed opossum." Over time, scientists realized Australian marsupials were fundamentally different from other animals. By 1824, the animal was placed into its own genus, *Thylacinus*. This helped establish the modern way we classify living things.

The decline of the thylacine was caused by several overlapping factors.

Bagged thylacine
Bagged thylacine

In mainland Australia and New Guinea, they died out approximately 3,200 to 3,600 years ago. This may have been due to the introduction of the dingo. In Tasmania, about 5,000 thylacines remained before European settlement. However, intensive hunting began in the 19th century because farmers saw them as threats to livestock.

Alb Quarrell holding his prized thylacine kill
Alb Quarrell holding his prized thylacine kill

Other contributing causes included disease, climate change, and human encroachment into their habitats. The last known thylacine died in captivity at the Hobart Zoo in 1936.

ThylacineHobart1933
ThylacineHobart1933

The thylacine remains a powerful cultural icon in Australia today.

Tasmania Coat of Arms
Tasmania Coat of Arms

It is featured on the official coat of arms of Tasmania. Because the last thylacine died on September 7, that date is now used for National Threatened Species Day.

Thylacine sightings Tasmania
Thylacine sightings Tasmania

Scientists continue to study the animal using advanced technology. Researchers have successfully mapped its entire genome sequence. This genetic map is being used in efforts to potentially clone the species and bring it back to life. Even though the animal is extinct, it continues to connect people to the history of the natural world.

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🖼️ Images & Media (28)
File:Thylacine harris cropped.jpg
Thylacine harris cropped.jpg
File:Dasyuromorphia portraits.jpg
Dasyuromorphia portraits.jpg
File:Thylacine and Coyote skulls.jpg
Thylacine and Coyote skulls.jpg
File:Thylacinus cynocephalus white background.jpg
Thylacinus cynocephalus white background.jpg
File:A hand-book to the marsupialia and monotremata (Plate XXX) (white background).jpg
A hand-book to the marsupialia and...
File:The zoology of the voyage of the H.M.S. Erebus and Terror (Sminthopsis leucopus).jpg
The zoology of the voyage of the H.M.S....
File:Phascogale calura Gould white background.jpg
Phascogale calura Gould white background.jpg
File:Phylogenetic tree of marsupials derived from retroposon data (Dasyuromorphia).png
Phylogenetic tree of marsupials derived...
File:Dasyurus viverrinus Gould white background.jpg
Dasyurus viverrinus Gould white background.jpg
Thylacine footage compilation.ogv
File:Thylacine size comparison.svg
Thylacine size comparison.svg
File:"Benjamin".jpg
"Benjamin".jpg

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