Monday, March 12, 2012

How Many Types of Cobras are there?

One of the most poisonous snakes in the world, cobras belong to the Elapidae family that includes Kraits and sea snakes. If you are wondering how many types of cobras are there, then there over 270 species of cobras. These different types of cobras are spread all over the Asian as well as African continents. These cobras are capable of delivering powerful neurotoxins that leads to necrosis and respiratory collapse. If anti-venom is not administered within 30 to 60 minutes, it could lead to sure death, especially in young children.

What are the Types of Cobras Found Around the World
There are over 270 cobra species in the world. Of these let us have a look at some of the most dreaded types of cobras found in Asia as well as Africa.

Cape Cobra (Naja nivea)
Cape cobra is a medium sized cobra that reaches a length of about 4 feet and can grow up to 6 feet. It is found in South Africa and its colour changes according to the region it inhabits. This diurnal snake feeds on other snakes, birds, rodents and many other small animals. This snake is an excellent climber and therefore can reach a bird's nest for its eggs and chicks. It too produces a powerful neurotoxin venom. On envenomation, the venom affects the respiratory system and it leads to death after 2 to 5 hours due to respiratory failure. Thus, making it one of the most potent, venomous cobras in all of Africa. The female cape cobra lays around 8 to 20 large eggs in a burrow.

Egyptian Cobra (Naja haje)
The Egyptian cobra is a type of the Naja species of cobra found in the Arabian peninsula as well as Africa. It can grow up to 5 to 8 feet in length and is therefore, one of the largest species of Naja. It has a characteristic head and hood. The head is very large and has a broad snout. The eyes are large and has round pupils with a `tear drop' mark below the eye. This terrestrial snake is nocturnal in nature. It generally prefers to escape when approached by humans. However, when threatened, it will resume its upright posture and spread its hood. This cobra feeds on small mammals, lizards, toads, other snakes, birds, etc. In a single bite, the Egyptian cobra is capable of delivering 175 to 200 mg of neurotoxin. This neurotoxin affects the nervous system that causes termination of nerve signals to muscles. As the venom spreads, the heart and lungs are affected, resulting in death due to respiratory paralysis.

Mozambique Spitting Cobra (Naja mossambica)
The Mozambique spitting cobra is one of the several spitting cobra species found in Africa. This is one of the small types of cobra that reaches the maximum length to 2½ feet to about 3 feet. These cobras tend to spit their venom into the eyes of their enemies. This venom causes intense pain and can lead to temporary or permanent blindness. Their body colour is olive, olive gray or tawny brown. The Mozambique spitting cobra is an active snake and rather fast. It tends to raise its hood and hiss loudly, when threatened. If the enemy does not back off, it will spit the venom in the eyes or face. This causes temporary or permanent blindness and allows the snake to escape. If it does bite, it leads to tissue destruction.

Forest Cobra (Naja melanoleuca)
The forest cobra is the second largest species of cobra. It can reach a length of 6 to 9 feet and sometimes reach over 9 feet in length. It is found in the heavily forested areas of West Africa. This snake is capable of delivering neurotoxins that can lead to death if not treated soon.

King Cobra (Ophiophahus Hannah)
The King cobra is one of the most feared of all types of cobras. This fierce snake is the longest venomous snake in the world. It can reach a length of 12 to 13 feet and weigh about 13 pounds. It is the only member of the genus Ophiophagus and is identified by it large size and hood marks. They have the symbol "^" on their necks instead of the single eye shape seen in other cobras. It is found in south and southeast Asia, etc. These snakes use their fork tongues to pick up scents and detect a meal. They can detect a moving pray that is almost 100 meters away. This highly aggressive snake tends to raise its hood and display its fangs to the enemy. It hisses loudly and can deliver multiple bites in a single attack. However, in most cases, the king cobra snake prefers to escape and not bite. The venom of the king cobra contains neurotoxins as well as cardiotoxic compounds. The snake can inject about 380 to 600 mg of venom in a single bite. This can lead to the death of a healthy adult within 15 minutes. The amount of venom injected can kill 20 to 40 grown men or an adult elephant.

Indian Spectacled Cobra (Naja naja)
One of the four big species of cobra, the Indian cobra is found in the Indian subcontinent. As mentioned in the first paragraph, the spectacled cobra or the Indian cobra is a revered snake in the Indian culture. When the snake raises its hood, you can see two circular ocelli patters that are connected with a curved line. This gives it an appearance of spectacles. This snake reaches a length of about 6 feet to 8 feet. The venom of this snake contains post synaptic neurotoxins that affects the synaptic nerves. Thus, leading to muscle paralysis, respiratory failure and cardiac arrest. The venom can turn fatal in less than one hour if not treated with an anti-venom.

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