
Australia is known for its dangerous snakes, but rattlesnakes are not native to the country. The Eastern Diamondback Rattlesnake, North America's largest venomous snake species, can be found at the Australia Zoo. The Western Diamondback Rattlesnake is another venomous rattlesnake species likely responsible for the majority of snakebite fatalities in northern Mexico and the greatest number of snakebites in the USA. While rattlesnakes are not native to Australia, hikers in Queensland may mistake the sound of a rattlesnake tarantula for that of a deadly rattlesnake.
| Characteristics | Values |
|---|---|
| Are rattlesnakes found in Australia? | No, rattlesnakes are not native to Australia. |
| Are there any snakes in Australia? | Yes, Australia is known for its dangerous snakes. |
| What are some of the dangerous snakes found in Australia? | Eastern brown snakes, western brown snakes, mainland tiger snakes, and eastern diamondback rattlesnakes (found in zoos). |
| What should I do if I hear a rattle in Australia? | Don't panic, it's likely a rattlesnake tarantula, which is non-fatal to humans but can be painful. |
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What You'll Learn
- Rattlesnakes are not native to Australia
- The Eastern Diamondback Rattlesnake is found in North America
- The Western Diamondback Rattlesnake is found in northern Mexico and the USA
- The Eastern Brown Snake is Australia's most venomous snake
- The Western Brown Snake is less aggressive but still highly dangerous

Rattlesnakes are not native to Australia
Rattlesnakes are native to the Americas, with species such as the Western Diamondback Rattlesnake found in the USA and northern Mexico. This species is responsible for the greatest number of snakebites in the USA and likely the majority of snakebite fatalities in northern Mexico. The Eastern Diamondback Rattlesnake, on the other hand, is found throughout the eastern United States, including environments like pine forests, woodlands, coastal dunes, and scrublands.
In Australia, hikers in Queensland may mistake the sound of the rattlesnake tarantula for that of a rattlesnake. The rattlesnake tarantula is Australia's largest tarantula species, and its bite is not fatal to humans but can be dangerous to dogs and cats. While not a snake, this spider species creates a similar rattling sound to that of a rattlesnake, which it uses as a warning to deter predators.
Australia is home to many dangerous snakes, including the Eastern Brown Snake and the Western Brown Snake, which are responsible for the most snakebite fatalities in the country. The Eastern Brown Snake's venom is ranked as the second most toxic of any land snake in the world, and they are known to thrive in populated areas, making them particularly dangerous. The Western Brown Snake, while less aggressive, delivers three times more venom than its Eastern cousin and can cause severe coagulopathy (blood clotting disorder) and kidney damage.
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The Eastern Diamondback Rattlesnake is found in North America
The Eastern Diamondback Rattlesnake (Crotalus adamanteus) is found in North America, specifically in the southeastern United States. It is the largest venomous snake species in North America and is considered the heaviest venomous snake on the continent. Its average length is between 3 and 6 feet, but some adults can grow up to impressive lengths of 8 feet. The species is easily identified by its distinctive pattern of yellow-bordered, light-centered black diamonds, which gives it its name. The tail of the Eastern Diamondback Rattlesnake is typically a different shade than its body, ranging from brown to gray and featuring dark rings. This species is well-known for its rattle, which serves as a highly effective defense mechanism to warn off predators such as hawks, coyotes, and raccoons.
The Eastern Diamondback Rattlesnake inhabits a diverse range of environments, including pine forests, woodlands, coastal dunes, and scrublands. They can also be found in slightly more moist areas, such as wet prairies, savannas, and around the borders of wetlands. These rattlesnakes are skilled swimmers and have been observed swimming in saltwater between barrier reefs and along the edges of swamps. They often seek shelter by tunneling in gopher and tortoise burrows, emerging during the early morning or afternoon to bask in the sun.
The range of the Eastern Diamondback Rattlesnake extends from southeastern North Carolina southward along the coastal plain through peninsular Florida and the Florida Keys. It then continues westward along the Gulf Coast through southern Alabama and Mississippi to southeastern Louisiana. While the species is classified as Least Concern on the IUCN Red List, there are concerns about its recent decline, with some scientists advocating for its inclusion on the Endangered Species List.
The Eastern Diamondback Rattlesnake is feared for its deadly venom, which is a potent hemotoxin that destroys red blood cells and causes tissue damage. However, they are typically not aggressive and prefer to avoid human contact. Most bites occur when humans attempt to capture, taunt, or kill the snake. The species is an important natural exterminator, preying on rodents, birds, and squirrels.
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The Western Diamondback Rattlesnake is found in northern Mexico and the USA
Rattlesnakes are not found in Australia. However, one of the most venomous and dangerous rattlesnake species, the Western Diamondback Rattlesnake, is found in northern Mexico and the USA.
The Western Diamondback Rattlesnake (Crotalus atrox) is a member of the viper family and is likely responsible for the majority of snakebite fatalities in northern Mexico. It is also the species that causes the greatest number of snakebites in the USA. This species is native to the southwestern United States and northern Mexico, ranging from central Arkansas to southeastern and Central California, and south into Mexico as far as northern Sinaloa, Hidalgo, and northern Veracruz. It is found in the states of California, Arizona, New Mexico, Texas, Arkansas, Oklahoma, and northern Mexico, and occasionally in Kansas.
The Western Diamondback Rattlesnake is a long and heavy-bodied venomous snake, the second-longest venomous snake in North America after its cousin, the Eastern Diamondback Rattlesnake. It is usually between 4 and 5 feet long, but some specimens have been recorded at over 6 feet in length, and the largest reported length is 7 feet. Males are larger than females, and very large specimens can weigh up to 15 pounds. The colour pattern of this rattlesnake species is usually a dusty-looking grey-brown, but it can also be pinkish-brown, brick red, yellowish, pinkish, or chalky white. The pattern on its back is made up of distinctive diamond shapes, and the tail has two to eight black bands separated by ash white or pale grey interspaces, which lead into the rattle.
The Western Diamondback Rattlesnake is a solitary snake and is usually inactive between late October and early March. It hibernates or brumates in caves or burrows during the winter, sometimes sharing these spaces with other snake species. It is a poor climber and is commonly found in arid desert and semi-desert conditions, hiding under vegetation, rocks, branches, and other debris. It is a generalist when it comes to habitat, and it can also be found in grassy plains, forests, rocky hillsides, and coastal areas. It is a reclusive snake and tends to avoid humans, but bites are common due to its prevalence in these areas. It is most frequently spotted when ambient temperatures drop, as it is attracted to the heat retention of blacktop roads.
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The Eastern Brown Snake is Australia's most venomous snake
Rattlesnakes are not native to Australia, but the country is known for its dangerous snakes. The Eastern Brown Snake (Pseudonaja textilis), often referred to as the common brown snake, is a species of highly venomous snake native to eastern and central Australia and southern New Guinea. It is considered the world's second-most venomous land snake, after the Inland Taipan, which is also native to Australia.
The Eastern Brown Snake is fast-moving, aggressive, and known for its bad temper. It is responsible for more deaths from snakebites in Australia than any other species, and is the most commonly encountered dangerous snake in Adelaide, Melbourne, Canberra, Sydney, and Brisbane. Between 2005 and 2015, brown snakes were responsible for 41% of identified snakebite victims in Australia, and for 15 of the 19 deaths during this period. The Eastern Brown is the most venomous species within the brown snake genus.
The Eastern Brown Snake has a slender build and can grow up to 2 metres (7 feet) in length. Its colour ranges from pale brown to reddish or almost black, with a cream-yellow underside often marked with orange or grey splotches. Its fangs are small compared to those of other venomous snakes in Australia, averaging 2.8 mm in length or up to 4 mm in larger specimens, and are 11 mm apart. Its iris is blackish with a pale yellow-brown or orange ring around the pupil.
The venom of the Eastern Brown Snake contains a cocktail of poisons, including a powerful neurotoxin that paralyses the nerves of the heart, lungs, and diaphragm, causing suffocation. It also contains a procoagulant that affects the circulatory system, leading to coagulopathy, haemorrhage, cardiovascular collapse, and cardiac arrest. Its LD50 (Lethal Dose 50) value, a standard measure of toxicity, is 0.053mg/kg, which means a single bite could kill nearly 200,000 mice.
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The Western Brown Snake is less aggressive but still highly dangerous
Australia is known for its dangerous snakes, but fortunately, few people die from snake bites. The Eastern Diamondback Rattlesnake, North America's largest venomous snake, can be found in Australia Zoo. However, it is not native to the country.
The Western Brown Snake, also known as the gwardar, is a venomous Australian snake species. It is said to be less aggressive than its eastern cousin, the Eastern Brown Snake, which is known for its bad temper. However, the Western Brown Snake is still highly dangerous and is part of the group of snakes that cause the most fatalities in Australia.
The Western Brown Snake tends to be fast-moving and nervous in temperament. When disturbed, it will run for cover, striking quickly if cornered, then making a quick getaway. Although its venom is not as toxic as the Eastern Brown Snake's, the Western Brown Snake delivers three times as much. Bites are usually painless and difficult to detect due to the small fang marks. Victims will experience symptoms such as headaches, nausea, abdominal pain, severe coagulopathy (blood clotting disorder), and sometimes kidney damage.
The Eastern Brown Snake is one of the country's most common and widely distributed venomous snakes and is responsible for the majority of snakebite fatalities in Australia. It is extremely fast-moving and aggressive, with a powerful build and a varied diet. Its venom is extremely potent, affecting the nervous system and blood coagulation.
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Frequently asked questions
No, rattlesnakes are not native to Australia. They are commonly found in North America.
The Eastern Diamondback Rattlesnake is North America's largest venomous snake species.
The colour pattern of the Western Diamondback Rattlesnake is usually a dusty-looking grey-brown. However, it can also be pinkish-brown, brick red, yellowish, pinkish, or chalky white.
An adult Western Diamondback Rattlesnake commonly grows to 120 cm in length.
Eastern brown snakes, together with other brown snakes, are responsible for the most snakebite deaths in Australia annually.









































