Cobra

A cobra (pronunciation (help·info)) is a venomous snake of family Elapidae, of several genera, but particularly Naja. more...

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(Non-cobra elapidae include the taipans, brown snakes, tiger snakes, fierce snakes, coral snakes, mambas, and sea snakes.) Cobras generally inhabit tropical and desert regions of Asia and Africa.

Appearance and description

The cobra's most recognizable feature is its hood, a section of its neck which it can flatten outwards in a threat display. Note that most snakes can flatten their necks to some degree; cobras are only more adept. Cobras come in varying colors from black or dark brown to yellowish white. Elapidae cannot fold their fangs down, as Viperidae can, so their fangs are generally shorter. Most cobras are quite large, reaching on average 1.2–2.5 m (3.9-8.2 ft) long.

Cobra is the Portuguese (and old Galician) common name for a snake; it came from the late Latin word for "a snake": colobra (from the classical Latin coluber, colubra). When Portuguese navigators arrived on the coasts of Africa and South Asia in the 16th century, they named the cobra "cobra-capelo", or "hood-snake"; from this compound, the name entered Spanish, French, English, and other European languages.

They kill their prey by injecting a neurotoxin through their hollow fangs. The neurotoxin blocks the synaptic communication between the victim's neurons and muscles, thus stopping movement and muscle control.

The cobra's predators include the mongoose and some raptors.

Types of cobra

The following is far from a complete list.

The most common cobra is the Indian cobra or Spectacled cobra Naja naja, native to the Indian subcontinent and associated with snake charming there. The Black cobra, found in Pakistan and North India, is generally considered to be a sub-species.

The second most common cobra species is the Monocled cobra, Naja kaouthia, widespread in Asia.

In addition to a deadly bite, the Spitting cobra can incapacitate larger would-be predators by delivering venom to their eyes. While extremely irritating, it rarely causes lasting damage if washed out promptly

The King cobra is ophiophagous; it feeds almost entirely on other snakes, even venomous ones, although it sometimes preys on small rodents and birds. It will only attack humans if provoked or in other extreme circumstances that threaten its survival.If not treated, a king cobra's bite can kill a person in just half an hour. King Cobras may reach up to 5.2m (17.1ft) in length, making them the largest venomous snakes in the world.

Read more at Wikipedia.org