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The Pythonidae, commonly known simply as pythons, are a family of non-venomous snakes found in Africa, Asia and Australia. Among its members are some of the largest snakes in the world. Eight genera and 26 species are currently recognized.

Geographic range

Found in subsaharan Africa, peninsular Indiamarker, Myanmarmarker, southern Chinamarker, Southeast Asia and from the Philippinesmarker southeast through Indonesiamarker to New Guineamarker and Australia.

In the United Statesmarker an introduced population of Burmese pythons, Python molurus bivittatus, has existed as an invasive species in the Everglades National Parkmarker since the late 1990s.


Many species have been hunted aggressively, which has decimated some, such as the Indian python, Python molurus.


Most members of this family are ambush predators, in that they typically remain motionless in a camouflaged position and then strike suddenly at passing prey. They will generally not attack humans unless startled or provoked, although females protecting their eggs can be aggressive. Large adult specimens can kill people. Unsuspecting children can and have been preyed upon and swallowed whole after being suffocated. Reports of attacks on human beings were once more common in South and Southeast Asia, but are now quite rare.


Prey is killed by a process known as constriction; after an animal has been grasped to restrain it, a number of coils are hastily wrapped around it. Then, by applying and maintaining sufficient pressure to prevent it from inhaling, the prey eventually succumbs due to asphyxiation. It has recently been suggested that the pressures produced during constriction cause cardiac arrest by interfering with blood flow, but this hypothesis has not yet been confirmed.

Larger specimens usually eat animals about the size of a house cat, but larger food items are not unknown: some large Asian species have been known to take down adult deer, and the African rock python, Python sebae, has been known to eat gazelle. Prey is swallowed whole, and may take anywhere from several days or even weeks to fully digest. Despite their intimidating size and muscular power, they are generally not dangerous to humans.

Contrary to popular belief, even the larger species, such as the reticulated python, P. reticulatus, do not crush their prey to death; in fact, prey is not even noticeably deformed before it is swallowed. The speed with which the coils are applied is impressive and the force they exert may be significant, but death is caused by suffocation, with the victim not being able to move its ribs in order to breathe while it is being constricted.


Females lay eggs (oviparous). This sets them apart from the family Boidae (boas), most of which bear live young (ovoviviparous). After they lay their eggs, females will typically incubate them until they hatch. This is achieved by causing the muscles to "shiver", which raises the temperature of the body to a certain degree, and thus that of the eggs. Keeping the eggs at a constant temperature is essential for healthy embryo development. During the incubation period, females will not eat and only leave to bask in order to raise their body temperature.


Most species in this family are available in the exotic pet trade. However, caution must be exercised with the larger species as they can be dangerous; cases of large specimens killing their owners have been documented.


Genus Taxon author Species Subsp.* Common name Geographic range
Antaresia Wells & Wellington, 1984 4 0 Australia in arid and tropical regions.
Apodora Kluge, 1993 1 0 Papuan python Most of New Guineamarker, from Misoolmarker to Fergusson Islandmarker.
Aspidites Peters, 1877 2 0 Australia except in the south of the country.
Bothrochilus Fitzinger, 1843 1 0 Bismark ringed python The islands of the Bismark Archipelagomarker, including Umboimarker, New Britainmarker, Gasmata (off the southern coast), Duke of Yorkmarker and nearby Mioko, New Irelandmarker and nearby Tatau (off the east coast), the New Hanover Islandsmarker and Nissan Islandmarker.
Leiopython Hubrecht, 1879 1 0 D'Albert's water python Most of New Guinea (below 1200 m), including the islands of Salawatimarker and Biakmarker, Normanbymarker, Mussau, as well as a few islands in the Torres Straitmarker.
Liasis Gray, 1842 3 2 Indonesiamarker in the Lesser Sunda Islandsmarker, east through New Guinea and in northern and western Australia.
Morelia Gray, 1842 7 5 From Indonesia in the Maluku Islandsmarker, east through New Guinea, including the Bismark Archipelago and in Australia.
PythonT Daudin, 1803 7 4 Pythons Africa in the tropics south of the Sahara (not including southern and extreme southwestern Madagascarmarker), Bangladeshmarker, Pakistanmarker, Indiamarker, Sri Lankamarker, the Nicobar Islandsmarker, Myanmarmarker, Indochina, southern Chinamarker, Hong Kongmarker, Hainanmarker, the Malayan region of Indonesiamarker and the Philippinesmarker.
*) Not including the nominate subspecies.

T) Type genus.


Pythons are more closely related to boas than to any other snake-family. Boulenger (1890) considered this group to be a subfamily (Pythoninae) of the family Boidae (boas).


Image:Morelia spilota.jpg|Carpet python,

Morelia spilotaImage:Morelia viridis.jpg|Green tree python,

Morelia viridisImage:Burmese Python 02.jpg|Albino Burmese python,

Python molurus bivittatusImage:Python breitensteini .jpg|Borneo short-tailed python,

Python curtus breitensteiniImage:Leiopython albertisii.jpgWhite-lipped python,

Leiopython albertisii

See also


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