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breed Library > Snake > Anacondas



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Description

Anacondas are four species of aquatic boa inhabiting the swamps and rivers of the dense forests of tropical South America as well as the southern swamps of the island of Trinidad. The Yellow Anaconda can be found as far south as Argentina.



Proportions

The Green Anaconda, which has been reported at over 10 meters (32.8 feet) in length (although most are considerably smaller).

The Yellow Anaconda, which reaches a relatively smaller average adult length of 3 metres (9.8 feet). These live further south in Bolivia, Paraguay, Uruguay, western Brazil, and northeast Argentina.


Personality

Anacondas differ from Boas by the snout being covered with shields instead of small scales, the inner of the three nasal shields being in contact with that of the other side. The general colour is dark olive-brown, with large oval black spots arranged in two alternating rows along the back, and with smaller white-eyed spots along the sides. The belly is whitish, spotted with black spots. The anaconda combines an arboreal with an aquatic life and is active mostly during the night. It lies submerged in the water, with only a small part of its head above the surface, waiting for any suitable prey, or it establishes itself upon the branches of a tree which overhangs the water or the track of game. The anaconda has a large head and a thick neck. Its eyes and nostrils are positioned on the top of the head, enabling the anaconda to breathe and to see its prey while its stocky body lies submerged under water. The extremely muscular anaconda is a constrictor and is not venomous; however, it still has teeth and powerful jaws that it utilizes to clench onto its prey. It grabs its victim and pulls it underwater, drowning the prey. The anaconda has a cavity called a cloaca which is where the intestinal and genitourinary tracks empty itself of feces, with spurs on either side of the cloaca, and a gland which emits a foul-smelling musk.

They typically feed on large rodents, tapirs, capybaras, deer, peccaries, fish, turtles, birds, sheep, dogs and aquatic reptiles like caiman. They have been known to occasionally prey on jaguars and attacks on humans can be confirmed, although this is rare. Younger anacondas feed on mice, rats, chicks, frogs and fish. Most local people kill these snakes on sight, out of the fear that they are man-eaters. In most instances, if an anaconda senses humans in the area, it will retreat in another direction. Human death by anaconda is quite rare. They themselves are preyed by jaguars, large caimans and by other anacondas. A wounded anaconda can also fall prey to piranhas.

Anacondas are usually coiled up in a murky, shallow pool or at the river's edge. They wait to ambush their unsuspecting prey when they come down for a drink. Anacondas bite their prey with their sharp teeth, hold on with their powerful jaws and pull them under water. The victim may drown first or it may be squeezed to death in the anaconda's muscular coils. Anacondas, true to the boa family, constrict their hapless victims to death. The snake squeezes tighter each time its prey breathes out, so the prey cannot breath in again. Suffocation does not take long. Anacondas swallow their prey whole, starting with the head. This is so the legs fold up and the prey goes down smoothly. The Anaconda can swallow prey much bigger than the size of its mouth since its jaw can unhinge and the jaw bones are loosely connected to the skull. While the snake eats, its muscles have wave-like contractions, crushing the prey even further and surging it downward with each bite.

Just about every species of snake on earth has teeth, but the anacondas' teeth are not used for chewing. Most snakes' teeth are used for holding onto their prey, preventing them from escaping. Some snakes have venom in two specially designed, extra long teeth which they use to kill their prey. Anacondas have teeth, but they are not a venomous snake. They rely on their enormous size and power to subdue their victims. It is possible to be bitten by an anaconda, but the bite itself would not be fatal. Like almost all boas, anacondas give birth to live young.

Things to Note

Anacondas have a reputation for bad temperament; that plus the massive size of the green species mean that anacondas are comparatively less popular as pets than other boas, but they are fairly commonly available in the exotic pet trade.