Wednesday, April 11, 2012

Fangs and Venom of Snakes

         Venomous snakes inject their venom with fangs. These are enlarged teeth – at either the front or the back of the mouth. The venom is produced in glands in the roof of the mouth. Rattle snakes and vipers have very long fangs that are folded back along the roof of the mouth when not in use. The longest fangs, up to 5cm long, belong to Africa’s gaboon viper. Snakes can swallow prey much fatter than their own bodies because they dislocate their jaws to give an enormous gape. Furthermore the ligaments stretched between bones are extremely elastic. Using their teeth like ratchets, they gradually work their jaws forward to engulf the prey. 

        Only a few venomous snakes are really dangerous to humans, but the most poisonous ones are not necessarily the most dangerous because they may be timid or not live in the places where they don’t be in the contact with the people. Many number of peoples were killed by the most dangerous snakes are primarily the Indian Cobra and saw scaled viper. Both kill thousands of people in Indian and Southeast Asia each year, although exact figures are impossible to obtain. The puff adder is probably the most dangerous of the African snakes, while the western diamond back rattlesnake kills more people than any other North American snake.