Science Main Index
The viper is a family of venomous snakes found all over the world, except in Australia and Madagascar. Vipers range in size from the small dwarf viper which is 10 inches in length, to the large bushmaster at 10 feet in length. Vipers have a pair of fangs that are used to inject venom from glands in the rear of the upper jaws. These fangs are hinged, and when not in use fold back against the roof of the mouth. Play the following videos to learn more about the viper snake.