These Are The Worst Animals In Australia

These Are The Worst Animals In Australia
Image: iStock

Australia is notorious for its menagerie of venomous and man-eating animals. While most foreigners are aware of the saltwater croc, brown snake, white pointer and funnel-web spider, there are countless other critters lurking in the Aussie wilderness that are equally unpleasant and/or deadly. Here’s a handy bestiary to show annoying overseas relatives so they don’t come visiting.

Not all of these creatures are native to Australia – but every one of them can be found on our shores and most have been known to inflict fatal injuries on humans. From the ravenous maw of the bull shark to the killer kick of the cassowary, here are ten fauna-based encounters you definitely want to avoid Down Under.

Box Jellyfish

Image: iStock

Chironex fleckeri

Bull Shark

Image: Wikimedia Commons

AKA Carcharhinus leucas. While the great white shark is more notorious due to the novel and movie Jaws, the bull shark has likely been involved in more fatal attacks on humans. It is known for its highly aggressive nature and – terrifyingly – can survive in bodies of fresh water. They frequent very shallow waters which makes them especially dangerous to humans. They are also territorial and will attack without provocation.


Image: iStock

AKA Casuarius casuarius or southern cassowary. This large, flightless black bird is chiefly found in northeastern Australia. It is the second-heaviest living bird on the planet and can inflict devastating injuries on humans via a curved nail on its talons. While there has only been one recorded human death in Australia, there have been hundreds of attacks. While generally shy if left unmolested, this is definitely a bird you don’t want to provoke.


Image: Wikimedia Commons

AKA Synanceia horrida. The highly venomous stonefish is found throughout most coastal regions of Australia. It is one of the most venomous fish known to science: a single sting from one of its spines can cause paralysis and even death. Sinisterly, the stonefish — which resembles a stone, hence its name — can be found both in and out of the water, making it very easy to accidentally tread on.

Death Adder

Image: Wikimedia Commons

Acanthophis antarcticus

Cone shell

Image: Wikimedia Commons

Conus striatusseashells

Giant centipede

Image: iStock

AKA Ethmostigmus rubripes. If you hate creepy crawlies this is your worst nightmare: the Australasian giant centipede can reach up to 16cm in length. It likes to live under logs, fallen leaves, bark and under rocks – which makes unexpected encounters high. Its claws are capable of delivering a highly toxic sting that can cause severe pain for days. While there are no recorded deaths in Australia, the venom is considered potent enough to kill children or small adults if left untreated.

Yellowbelly Sea Snake

Hydrophis platurusand

Mouse spider

Image: Paul Asman and Jill Lenoble

AKA Missulena bradleyi. This ghastly looking creature is not as famous as the funnel-web, red back or huntsman spider — yet its bite is just as nasty. Its venom contains toxins similar to the robustoxin found in funnel-web spiders. According to some experts, it has the potential to deliver a deadly bite. Their eyes are spread out across the front of the head in the typical nightmare-fuel arrangement. They can be found in burrows covered with trapdoors which doesn’t sound evil and sinister at all.

Drop Bear

Image: Yamavu

Thylarctos plummetus

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This story has been updated since its original publication.


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