West African gaboon viper (Bitis gabonica rhinoceros) - This big African viper has the longest fangs of any snake. It is a classic sit-and-wait predator, with disruptive coloration. Its head resembles a leaf, and the horns on its nose add to the effect. It sits motionless on the forest floor, waiting for hapless mammals to approach. When they come within striking range, it lunges at them, imbedding its long fangs as deeply as possible while it pours venom into its prey. The venom is quite potent and the prey usually dies within a few minutes.