"At night, a mouse searches for food, unaware that danger lurks close by. A pit viper lies in wait, sensing the warm-blooded animal by using its heat-sensing pits. Even in the dark, the snake can strike its prey with amazing accuracy. Its long, hinged fangs shoot deadly venom into its victim. No wonder these skilled predators are so widely feared! Get close to these fascinating reptiles and learn what makes pit vipers unique within the mysterious world of snakes." -- Back cover.