Sunday, April 9, 2017

Rock Python

The African rock python (Python sebae) is a large, nonvenomous snake of sub-Saharan Africa. It is one of 11 living species in the genusPython. It has two subspecies; one is found in Central and Western Africa, the other in Southern Africa.
Africa's largest snake and one of the six largest snake species in the world (along with the green anacondareticulated pythonBurmese pythonIndian python, and amethystine python), specimens may approach or exceed 6 m (20 ft). The southern subspecies is generally smaller than its northern relative. The snake is found in a variety of habitats, from forests to near deserts, although usually near sources of water. The African rock python kills its prey by constriction and often eats animals up to the size of antelope, occasionally even crocodiles. The snake reproduces by egg-laying. Unlike most snakes, the female protects her nest and sometimes even her hatchlings.


The snake is widely feared, though it very rarely kills humans. Although the snake is not endangered, it does face threats from habitat reduction and hunting.


(rock python)

DESCRIPTION
Africa's largest snake species and one of the world's largest,the typical African rock python adult measures 3 to 3.53 m (9 ft 10 in to 11 ft 7 in), with only unusually large specimens likely to exceed 4.8 m (15 ft 9 in). Reports of specimens over 6 m (19 ft 8 in) are considered reliable, although larger specimens have never been confirmed.Weights are reportedly in the range of 44 to 55 kg (97 to 121 lb), per one study adults are expected to weigh only up to 32.2 kg (71 lb). Exceptionally large specimens may weigh 91 kg (201 lb) or more.One specimen, reportedly 7 m (23 ft 0 in) in length, was killed by K. H. Kroft in 1958 and was claimed to have had a 1.5 m (4 ft 11 in) juvenile Nile crocodile in its stomach. An even larger specimen considered authentic was shot in The Gambia and measured 7.5 m (24 ft 7 in).The African rock python's body is thick and covered with colored blotches, often joining up in a broad, irregular stripe. Body markings vary between brown, olive, chestnut, and yellow, but fade to white on the underside.The head is triangular and is marked on top with a dark brown “spear-head” outlined in buffy yellow. Teeth are many, sharp, and backwardly curved.Under the eye, there is a distinctive triangular marking, the subocular mark.Like all pythons, the scales of the African rock python are small and smooth.Those around the lips possess heat-sensitive pits, which are used to detect warm-blooded prey, even in the dark.Pythons also possess two functioning lungs, unlike more advanced snakes which have only one, and also have small, visible pelvic spurs, believed to be the vestiges of hind limbs.The snake varies considerably in body size between different areas. In general, it is smaller in highly populated regions, such as in southern Nigeria, only reaching its maximum length in areas such as Sierra Leone, where the human population density is lower. Males are typically smaller than females.
The southern subspecies is distinguished by its smaller size (adults averaging about 2.4 to 4.4 m in length), smaller scales on top of the head, and a smaller or absent subocular mark.

HABITAT
The African rock python inhabits a wide range of habitats, including forest, savanna, grassland, semidesert, and rocky areas. It is particularly associated with areas of permanent water, and is found on the edges of swamps, lakes, and rivers.The snake also readily adapts to disturbed habitats, so is often found around human habitation,especially cane fields.

FOOD
Like all pythons, the African rock python is nonvenomous and kills its prey by constriction. After gripping the prey, the snake coils around it, tightening its coils every time the victim breathes out. Death is thought to be caused by cardiac arrest rather than by asphyxiation or crushing. The African rock python feeds on a variety of large rodents, monkeys, warthogs, antelopes, fruit bats, monitor lizards, and even crocodiles in forest areas,and on rats, poultry, dogs, and goats in suburban areas. Occasionally, it may eat the cubs of big cats such as leopards, lions, and cheetahs, and puppies of big dogs such as hyenas and Cape hunting dogs.[ However, these encounters are very rare, as the adult cats can easily kill pythons or fend them off.In March 1, 2017, a 3.9-m (15-ft) African rock python was filmed eating an adult male spotted hyena weighing 150 lb (68 kg). This encounter suggests that the snake might very well be capable of hunting and killing larger and more dangerous animals than previously thought.

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