Pseudonaja nuchalis | |
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A northern brown snake at the Australia Zoo | |
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Reptilia |
Order: | Squamata |
Suborder: | Serpentes |
Family: | Elapidae |
Genus: | Pseudonaja |
Species: | P. nuchalis |
Binomial name | |
Pseudonaja nuchalis Günther, 1858 | |
Pseudonaja nuchalis, the northern brown snake [2] or gwardar, is a species of very fast, highly venomous elapid snake native to Australia. Its colour and pattern are rather variable, depending largely on its location. [2]
The name gwardar is a word meaning "go the long way around" in an Aboriginal language [ which? ].[ citation needed ] This may be regarded as advice for people who come across the species in the wild: that is, while P. nuchalis is generally cautious, shy, and inclined to retreat rather than attack, it will defend itself if cornered.
The northern brown snake grows up to 1.8 m (5 ft 10.87 in) in total length (including tail). Its back can feature shades of orange-brown with flecks and bands, or appear plain. Its belly is cream to orange with pink blotches. Some individuals have jet black heads (this can cause it to be confused with the black-headed python), [3] while others feature a black 'V' shape on the back of their neck, below their head. [4]
The northern brown snake has a wide distribution and is found across the north of the Australian continent, including the Northern Territory, Queensland and Western Australia. [1]
The northern brown snake is a ground-dwelling snake that prefers drier habitats, but is also found in coastal eucalypt forests, woodlands, and grasslands. [3] Although the northern brown is not an arboreal species, it is not uncommon for it to climb small shrubs or trees. It also hides in crevices and under rocks, and in urban areas can be found under rubbish or tin piles.
Pseudonaja nuchalis preys upon small mammals and reptiles, including lizards and mice. [3] [5]
Little is known about the northern brown snake's lifespan. Mating season is roughly from September to November and the female usually produces around 11-14 eggs, [3] but may produce up to 38. [6]
Although the northern brown snake's venom is not the most toxic in the brown snake genus, its average delivery contains a relatively high quantity of venom; thus the northern brown snake has high potential to deliver a deadly bite. [6] Its venom contains neurotoxins, nephrotoxins, and a procoagulant, although humans are not usually affected by the neurotoxins. [2] The bite is usually painless and difficult to see due to their small fangs. Human symptoms of a northern brown snake bite are headache, nausea/vomiting, abdominal pain, severe coagulopathy, and sometimes kidney damage. [7] In dogs and cats, paralysis is also likely to occur.
The northern brown snake is known to be very aggressive when disturbed or threatened, but like most snakes, usually prefers to retreat from danger. [8] It may develop nocturnal habits during the warmer months, but is otherwise active during the day and enjoys sunlight. [3] The snake has also been known to practise cannibalism, although this is not common. [9] Northern brown snakes kill their prey with a combination of venom and constriction. [4]
The king cobra is a venomous elapid snake species, endemic to South and Southeast Asia. It is sole member of the genus Ophiophagus. With an average length of 3.18 to 4 m, it is the world's longest venomous snake and possesses a potent neurotoxic venom that can cause the victim's death in 30 minutes. Its skin colour varies across the habitats from black with white stripes to unbroken brownish grey. It preys chiefly on other snakes and is also known to cannibalise. Its threat display includes spreading its neck-flap, raising its head upright, making eye contact, puffing, and hissing. Despite its fearsome reputation, it avoids confrontation with humans whenever possible. Altercations usually only arise from a cobra inadvertently exposing itself or being chased. If provoked, it can strike at long range and may sustain its bite, prolonging the quantity of injected venom, which is likely to result in a rapid medical emergency.
Bungarus is a genus of venomous elapid snakes, the kraits, found in South and Southeast Asia. The genus Bungarus has 16 species.
Taipans are snakes of the genus Oxyuranus in the elapid family. They are large, fast-moving, highly venomous, and endemic to Australia and New Guinea. Three species are recognised, one of which, the coastal taipan, has two subspecies. Taipans are some of the deadliest known snakes.
The inland taipan, also commonly known as the western taipan, the small-scaled snake or the fierce snake, is a species of extremely venomous snake in the family Elapidae. The species is endemic to semi-arid regions of central east Australia. Aboriginal Australians living in those regions named the snake dandarabilla. It was formally described by Frederick McCoy in 1879 and then by William John Macleay in 1882, but for the next 90 years it was a mystery to the scientific community; no further specimens were found, and virtually nothing was added to the knowledge of this species until its rediscovery in 1972.
The eastern brown snake, often referred to as the common brown snake, is a species of highly venomous snake in the family Elapidae. The species is native to eastern and central Australia and southern New Guinea. It was first described by André Marie Constant Duméril, Gabriel Bibron, and Auguste Duméril in 1854. The adult eastern brown snake has a slender build and can grow to 2 m (7 ft) in length. 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 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 species is oviparous. The International Union for Conservation of Nature classifies the snake as a least-concern species, though its status in New Guinea is unclear.
The black mamba is a species of highly venomous snake belonging to the family Elapidae. It is native to parts of sub-Saharan Africa. First formally described by Albert Günther in 1864, it is the second-longest venomous snake after the king cobra; mature specimens generally exceed 2 m and commonly grow to 3 m (9.8 ft). Specimens of 4.3 to 4.5 m have been reported. Its skin colour varies from grey to dark brown. Juvenile black mambas tend to be paler than adults and darken with age.
The woma python, also known commonly as Ramsay's python, the sand python, and simply the woma, is a species of snake in the family Pythonidae, endemic to Australia. Once common throughout Western Australia, it has become critically endangered in some regions.
The dugite is a species of venomous, potentially lethal, snake native to Western Australia, a member of the family Elapidae.
Pseudonaja is a genus of highly venomous elapid snakes native to Australia. Species of this genus are known commonly as brown snakes and are considered to be some of the most dangerous snakes in the world; even young snakes are capable of delivering a fatal envenomation to a human.
The king brown snake is a species of highly venomous snake of the family Elapidae, native to northern, western, and Central Australia. Despite its common name, it is a member of the genus Pseudechis and only distantly related to true brown snakes. Its alternative common name is the mulga snake, although it lives in many habitats apart from mulga. First described by English zoologist John Edward Gray in 1842, it is a robust snake up to 3.3 m (11 ft) long. It is variable in appearance, with individuals from northern Australia having tan upper parts, while those from southern Australia are dark brown to blackish. Sometimes, it is seen in a reddish-green texture. The dorsal scales are two-toned, sometimes giving the snake a patterned appearance. Its underside is cream or white, often with orange splotches. The species is oviparous. The snake is considered to be a least-concern species according to the International Union for Conservation of Nature, though may have declined with the spread of the cane toad.
The desert death adder is a species of snake native to Australia and is one of the most venomous land snakes in the world. The desert death adder is under threat due to the destruction of habitat.
The Australian Reptile Park is located at Somersby on the Central Coast, New South Wales in Australia. It is about 50 kilometres (31 mi) north of Sydney, and is just off the M1 Pacific Motorway. The Park has one of the largest reptile collections in Australia, with close to 50 species on display. The wide variety of reptile species at the Park includes snakes, lizards, turtles, tortoises, tuataras, American alligators and crocodiles.
The yellow-faced whip snake is a species of venomous snake in the family Elapidae, a family containing many dangerous snakes. D. psammophis is endemic to Australia, found throughout the continent in a variety of habitats from coastal fringes to interior arid scrubland.
The rough-scaled snake is a highly venomous Australian elapid. The animal's name comes from its scales that are raised above the surrounding scales and have rough texture. The scales are known as "keels".
The coastal taipan, or common taipan, is a species of highly venomous snake in the family Elapidae. Described by Wilhelm Peters in 1867, the species is native to the coastal regions of northern and eastern Australia and the island of New Guinea. The second-longest venomous snake in Australia, the coastal taipan averages around 2 m (6.6 ft) long, with the longest specimens reaching 2.9 m (9.5 ft) in length. It has light olive or reddish-brown upperparts, with paler underparts. The snake is considered to be a least-concern species according to the International Union for Conservation of Nature.
The Papuan black snake is a venomous snake of the family Elapidae native to New Guinea. Reaching around 2 m in length, it is a predominantly black snake coloured grey underneath.
The western brown snake is commonly known as Mengden's brown snake, and alternatively, gwardar.
The speckled brown snake or spotted brown snake is a species of venomous elapid snake native to northeastern Australia.
The strap-snouted brown snake is a species of venomous snake in the family Elapidae. The species is native to South Australia, New South Wales, Queensland, and Victoria. P. aspidorhyncha is part of a species complex that also includes P. mengdeni and P. nuchalis; all were formerly included in the latter species.