In it, he reported a snake that fits the description of the eastern brown snake, but did not name it. John White, the surgeon-general of the First Fleet to New South Wales, wrote, A Journal of a Voyage to New South Wales in 1790, which described many Australian animal species for the first time. One of the main components of the venom is the prothrombinase complex pseutarin-C, which breaks down prothrombin. The main effects of its venom are on the circulatory system- coagulopathy, haemorrhage ( bleeding), cardiovascular collapse, and cardiac arrest. It is considered the world's second-most venomous land snake after the inland taipan ( Oxyuranus microlepidotus), based on its LD 50 value ( subcutaneous) in mice. The International Union for Conservation of Nature classifies the snake as a least-concern species, though its status in New Guinea is unclear. The eastern brown snake is found in most habitats except dense forests, often in farmland and on the outskirts of urban areas, as such places are populated by its main prey, the house mouse. ![]() The colour of its surface ranges from pale brown to black, while its underside is pale cream-yellow, often with orange or grey splotches. The adult eastern brown snake has a slender build and can grow to 2 m (7 ft) in length. It was first described by André Marie Constant Duméril, Gabriel Bibron, and Auguste Duméril in 1854. The species is native to eastern and central Australia and southern New Guinea. The eastern brown snake ( Pseudonaja textilis), often referred to as the common brown snake, is a species of highly venomous snake in the family Elapidae.
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