3 Eastern Brown Snake. How Venomous: LD 50 of 0.053 mg/kg. Western brown snake (Pseudonaja mengdeni) This snake has relatively small fangs (approximately 3mm), but makes up for this with the toxicity of its venom. Eastern Brown Snake . The Eastern Brown Snake can grow to be large and very deadly. Eastern Brown Snake Bite Symptoms and Treatment. The eastern brown snake is an indigenous species to Australia, Indonesia, and Papua New Guinea. If disturbed, the eastern brown raises its body off the ground, winding into an ‘S’ shape, mouth gaping open and ready to strike. It is characterized by different shades of brown, and its average length ranges between 3.6 to 5.9 feet. While the Eastern Brown Snake does not have the most toxic venom of snakes found in Australia, it is responsible for over 60% of fatal snake bites in Australia. 2. Australia is home to some of the most venomous snakes in the world, the Eastern brown snake being one of them. The venom of an Eastern Brown Snake contains a cocktail of poisons. Distribution: Indonesia, Papua New Guinea, and Australia The eastern brown snake can be found in Indonesia, Papua New Guinea, and Australia. Considered the second-most venomous land snake in the world, the eastern brown is an incredibly dangerous animal and is capable of causing life-threatening injuries with nearly every bite. Out of 35 reported snake-bite deaths between 2000 and 2016 in Australia, 23 of the were caused by the Eastern Brown Snake (University of Melbourne, 2017). 3. The Eastern Brown Snake’s venom is extremely deadly and is responsible for more deaths in Australia than any other snake species. The Eastern brown snake is a highly venomous snake native to eastern and central Australia. Eastern brown snakes are one of the deadliest snakes in Australia and are responsible for more deaths than any other species in a year. The eastern brown (also known as the common brown snake) is a species of highly venomous snake from the Elapidae family. Adult eastern brown snake. Their venom is ranked as the second most toxic of any land snake in the world, based on tests on mice. In Comparative Biochemistry and Physiology, they report two major new discoveries lurking in the venom of the eastern brown snake and seven of the other eight members of the Pseudonaja genus. The venom of the Eastern Brown Snake is rated as the second most toxic of all snake venoms in the world, next only to that of Inland Taipan (which is also a native of Australia). Credit: Stewart Macdonald The "blood nuking" capabilities of adult brown snake venom only come about after an amazing transformation. The eastern brown snake belongs to the elapid family of snakes which means it has hollow syringe-like venom injecting fangs located in the front of its mouth. Victims may collapse within a few minutes. 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