The Tasmanian devil (Sarcophilus harrisii) is a stocky, black-furred marsupial found in the wild only on the island of Tasmania, Australia. Famous for its powerful jaws and loud vocalizations, it is mostly nocturnal and often feeds on carrion—though it can also hunt. Today, the species faces serious pressures from disease and human-related threats, making conservation work especially important.
Characteristics of the Tasmanian Devil
What it looks like
Build: Robust, muscular body with a large head and thick neck.
Fur color: Usually black to dark brown, often with white patches on the chest, sides, or rump.
Face and snout: Pinkish snout; heavy skull and strong jaw muscles.
Teeth and bite: Large, sturdy molars and sharp teeth adapted for tearing flesh and crunching bone.
Size and weight
Total length: About 52.5–80 cm, plus a 23–30 cm tail.
Weight: Males are typically heavier (often up to around 12 kg), while females commonly range from about 4–8 kg.
Sex differences: Males are usually slightly larger than females.
Tail, pouch, and lifespan
Tail fat storage: Devils store fat in the tail, which can look thicker when food is abundant.
Pouch (marsupium): Females have a pouch used to protect developing young; they typically have four teats.
Lifespan: In the wild, many live only a few years (often up to around 5 years), while individuals in care can live longer.
Where the Tasmanian Devil Lives
The Tasmanian devil is native to Tasmania and occurs across a wide range of habitats, from coastal areas to mountainous regions. It can live in both natural and human-modified landscapes.
Common habitats
Eucalyptus forests and woodlands
Coastal scrub and heath
Farmland edges and rural landscapes (often where carrion is available)
A note on its past range
Fossil and subfossil evidence indicates Tasmanian devils once lived on mainland Australia, but they disappeared there thousands of years ago. Today, wild populations are restricted to Tasmania.
What the Tasmanian Devil Eats
Tasmanian devils are best known as scavengers, but they are also capable predators when opportunities arise.
Main diet
Carrion: Dead wallabies, birds, reptiles, amphibians, and other animals
Invertebrates: Insects and other small prey
In agricultural areas: Carrion from livestock may also be taken
Why their jaws matter
Their strong jaws and durable teeth allow them to consume almost everything on a carcass, including skin, fur, and bones. This helps recycle nutrients and can reduce the time carcasses remain in the environment.
Behavior of the Tasmanian Devil
Nocturnal lifestyle and shelter
Devils are mainly active at night. During the day, they rest in sheltered spots such as:
Rock crevices and small caves
Dense shrubs
Hollow logs
Old burrows (including those made by other animals)
Movement and senses
At night, a devil may travel long distances in search of food. It relies heavily on a sharp sense of smell and good hearing to locate carcasses and detect danger.
Social feeding and “devil” sounds
Although they don’t form true packs, devils may gather at a large carcass. Feeding groups can be noisy, with growls, screams, and threat displays used to establish dominance and avoid prolonged fights.
Young devils
Younger devils tend to be more agile and may climb more readily. Play behaviors—wrestling, mock biting, and vocalizing—help develop skills that later appear during competition at food sources.
Reproduction of the Tasmanian Devil
Mating system and timing
Devils typically reach sexual maturity in their second year. Mating often occurs around March, and the mating system is competitive, with males vying for access to receptive females.
Birth and pouch stage
Gestation: Roughly three weeks.
Litter size: Females can give birth to many tiny young (often 20 or more), but only a few survive.
Why only a few make it: Because the mother has four teats, typically only up to four joeys can continue developing.
Pouch time: The surviving joeys remain in the pouch for several months.
After the pouch
Once they outgrow the pouch, the mother often leaves them in a den (such as a hollow log or sheltered burrow) while they continue growing and are gradually weaned.
Threats and Conservation
The Tasmanian devil is considered Endangered in much of its range. Threats can vary by location, but several pressures are widely recognized.
Major threats
Disease: Contagious facial tumor disease has caused severe declines in some populations.
Vehicle collisions: Roadkill is a significant risk, especially where devils scavenge near roads.
Habitat loss and fragmentation: Land clearing and development reduce safe habitat and den sites.
Dog attacks: Encounters with domestic dogs can be fatal.
Competition for carrion: Other scavengers may compete for food resources.
Conservation approaches
Protecting habitat and reducing road mortality in key areas
Monitoring wild populations and managing disease impacts
Maintaining insurance populations in protected areas and managed programs
Interesting Facts About the Tasmanian Devil
It’s not a cartoon character: The real animal inspired famous animation, but it’s a genuine marsupial predator-scavenger.
Powerful bite: Relative to its size, it has one of the strongest bites among mammals.
“Yawning” can be a display: A wide-open mouth may signal stress or uncertainty, not just aggression.
Vocal drama at meals: The screams and growls often help settle disputes without serious injury.
Big role in the ecosystem: By consuming carrion quickly, devils help keep environments cleaner and may limit some scavenger-borne disease risks.
