Deadly Animals in Australia

Australia is home to a wide range of deadly animals.  We have compiled a list of some of the most common deadly animals so you can stay a safe distance from these native nasties.

BOX JELLYFISHdeadly animals

The Box Jelly Fish is found in Australian Waters on the North East Coast of Queensland. It is very dangerous creature as its tentacles (which can reach up to 80cm) have extreme toxins on them and when these tentacles come into contact with human skin your heart will stop in as little as three minutes.

This particular Jellyfish is responsible for more deaths in Australia  than snakes, sharks and salt water crocodiles.

Box Jelly Fish stings must be treated immediately , Pour vinegar over the sting and carefully remove the tentacles with gloves. Call an ambulance and let them no its a box jelly fish as they may have to treat on the scene ( transportation may take to long and the patient may not survive).


This particular jelly fish inhabits the Northern Australian waters up near Cairns and Great Barrier Reef during the jellyfish season from October to May. This deadly jellyfish is only about 2.5 cm in size, which makes it incredibly hard to see.

If stung the sting is not seen like that of the tentacles of the box Jelly Fish, this in appearance is more like a rash , however sometimes there is nothing at all except for a warm tingling feeling. Just to be certain always seek medical help if a sting is suspected.


The Salt Water Crocodile is the world’s largest living reptile and they live and breed in Australia! These incredible creatures are found on the northern coast of Australia and in land 100km or more.  Its average size is 4meters long, however it’s been reported it can grow up to 7 meters long!

They reproduce in wet seasons, with the female crocodile laying up to 60 eggs at a time. When they are born, only a small number of the babies actually survive, that is not to say they are limited in Australia!


The Blue Ring Octopus is deadly and inhabits warm waters and shallow reefs of the coast of Australia. This Octopus has distinctive blue rings on its body, with its tentacles spread it is only around 20cm in diameter. If the octopus is touched or comes into contact with the skin, immediately cut off the circulation to the affected area and call an ambulance.


This creature is another of Australia’s most deadly marine creatures and is found in shallow waters around Australia’s coast line. The Stonefish is well camouflaged in the ocean, as it is a brownish colour and resembles a rock.

The stone fish has 13 sharp spines on its back and if stood on or stung extremely toxic venom is released into the body. If stung immerse the sting in to warm water to reduce the severity of the pain and call an ambulance.


The red back spider is known right around the world as one of Australia’s most deadly spiders. They are found all over Australia and are highly common in urban areas. Theses spiders can usually be found under logs, rocks, bricks, sheds and outdoor toilets.

It is only the female version  of this spider that is dangerous to humans as her venom is far more toxic.

If bitten by this spider apply iced water and do NOT bandage an antivenin is available and is very affective, seek medical attention.


The brown Snake grows to approximately 1.5 meters long and is one of Australia’s most deadly reptiles. Brown snakes feed on animals such as mice, rats, small birds lizards or even other snakes.

These snakes are found in South Eastern Australia, however they are not found In Tasmania.

Brown Snakes venom is extremely toxic and will cause death if not treated.  If you are bitten immobilise the area and try not to move and remain calm. Call an ambulance immediately!


The common Tiger Snake is found in southern and eastern areas of Australia. They are usually around one meter long, have striped markings on them and are earthy in colour.  This particular snake is really aggressive and will attack if disturbed or threatened. They are quite territorial and often live in the same area for years.

If bitten seek urgent medical attention!


The Great White Shark belongs to a group of sharks called Mackeral Shark. Its more affectionate name “Great White” comes from the sharks white underbelly. They usually swim alone and are found on all coasts in Australia and around the world.

They can grow up to 4 metres long and usually the females are larger than the males.. They have an average of 2800 teeth in their mouth and are in triangular rows, which help them keep hold of their prey.