Venomous snakes are characterized by the structure of their fangs. For example, the African boomslang has fangs at the back of the mouth, each bearing a groove down which venom flows. The cobra has fangs at the front of the mouth, again grooved; and rattlesnakes and vipers have the most sophisticated biting apparatus: their fangs are hinged, and when they are not in use, fold back along the roof of the mouth. The toxicity of snake venom varies from species to species. Read the rest of this entry »
