Lexi Webster
The Australian Outback is a vast and desolate area with several climatic regions, ranging from tropical to arid, semi-arid, and temperate. It is known for its rich diversity of flora and fauna, including a variety of unique plant species such as wattles, which are a significant part of the ecosystem and play a crucial role in the food chain. Wattles, also known as acacias, have been a staple food for First Nation tribes in Australia for thousands of years, and their seeds are now an international export. However, it's important to distinguish between the different types of wattles, as some varieties like the hakea wattle are toxic and can cause adverse reactions if consumed.
| Characteristics | Values |
|---|---|
| Animals | Frilled lizard, kangaroo, dingo, saltwater crocodile, ghost bat, sand goanna, Stimson's python, Moloch horridus, and more |
| Plant life | Grass |
| Insects | Bush flies |
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What You'll Learn
Saltwater crocodiles
Breeding and raising young saltwater crocodiles occur in freshwater areas. Between November and March, female crocodiles lay 40 to 60 eggs in nests made from plant matter and mud on riverbanks. The sex of the young crocodiles is determined by the incubation temperature, with temperatures below 30°C resulting in female hatchlings and temperatures above 32°C resulting in males.
The Australian saltwater crocodile population faced significant threats due to unregulated hunting during the 20th century, with numbers in northern Australia reduced by 95% by 1971. The hunting was primarily driven by the value of their hides and skins. Today, the species has full legal protection in all Australian states and territories where it is found, and its population is estimated to be over 150,000.
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Dingoes
Rabbits and hares are a significant part of the dingo's diet, as they are a nutritious and readily available food source. Dingoes use their speed and endurance to chase down these small, fast-breeding rodents. They can hunt alone or in packs, adjusting their strategy to improve their chances of making a kill.
Furthermore, dingoes are known to raid farms and prey on livestock, such as sheep and young cattle. This behavior often brings them into conflict with farmers. Dingoes employ their powerful jaws and biting technique to take down sheep, while they chase cattle until the animals exhaust themselves.
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Kangaroos
During periods of abundant grass growth, kangaroos primarily feed on grasses and forbs. However, during dry seasons or droughts when grasses become scarce, they rely more heavily on shrubs and trees for sustenance. Some common shrubs and trees that kangaroos feed on include acacias, eucalyptus, and wattles. These plants provide kangaroos with additional nutrients, such as tannins and secondary compounds, which can have medicinal properties.
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Ghost bats
Despite their well-documented decline, ghost bats are not currently listed as endangered. However, they are considered vulnerable to extinction by the IUCN and The Action Plan for Australian Mammals (2012). Human disturbance, mining operations, and habitat loss pose significant threats to their survival. Conservation efforts are focused on reducing cave roost disturbance and protecting their habitats.
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Snakes
The Coastal Taipan (Oxyuranus scutellatus) is Australia's most notorious snake and the longest of the venomous snakes, growing up to 3 meters in length. It is found in an arc along the east coast, from northern New South Wales to Brisbane and northern Western Australia. It is equipped with the longest fangs of any Australian snake (13mm) and possesses the third most toxic venom of any land snake. The Coastal Taipan is extremely nervous and alert, and when surprised or cornered, it will 'freeze' before hurling its lightweight body forward to deliver several rapid bites.
The Inland Taipan (Oxyuranus microlepidotus), also known as the fierce snake or lignum snake, is considered the most dangerous and venomous snake in the world. It is found in the Channel Country of southwest Queensland, northeast of South Australia, and in the northwest of New South Wales. The Inland Taipan varies from yellowish-brown to dark brown, with its colour usually darkening in winter. It is a shy snake that seeks shelter in cracks and holes, but if provoked, it will raise its forebody to give a warning before striking and injecting its highly venomous bite.
The Death Adder (Acanthophis antarcticus) is another dangerous snake found in the Australian Outback, except in Victoria and the very southeast of South Australia. It is well-camouflaged and lies in wait on sand, gravel, or leaf litter. Unlike other snakes, the Death Adder will not move even if you're about to step on it, so it is crucial to be vigilant and use a stick to poke through any leaf litter when walking in the Outback.
Other venomous snakes in the Australian Outback include the Mulga snake (Pseudechis australis), the Red-bellied Black Snake, and the Western Brown Snake. The Mulga snake is the heaviest venomous snake in Australia and has the largest recorded venom output in the world, delivering 150mg in a single bite. The Red-bellied Black Snake is less venomous but is more commonly found in urban areas, and its bite can cause significant illness. The Western Brown Snake is extremely venomous and fiercely defensive.
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Frequently asked questions
The Australian Outback is home to a variety of animals, including kangaroos, frilled-neck lizards, saltwater crocodiles, ghost bats, dingos, and snakes such as the Stimson's Python and the common death adder.
The animals in the Australian Outback have diverse diets depending on the species. For example, the sand goanna, a ground-dwelling lizard found in grasslands and woodlands, preys on mice, insects, snakes, and birds, and also consumes carrion. Kangaroos are plant-eaters, munching on grass.
Yes, the Australian Outback is home to several venomous snakes, including the common death adder, desert death adder, red-naped snake, and orange-naped snake, and the world's most dangerous snake in terms of median lethal dose value in mice, the inland taipan. These snakes have venom potent enough to kill an adult human within minutes.
One unique animal found in the Australian Outback is the Moloch horridus, a lizard species endemic to Australia. It gets its intimidating name from the array of spikes covering its dorsal surface, which help protect it from predators.
