Description A parasite's main goal is to survive--whether or not their host does. The hairworm is a prime example of this, forcing its grasshopper host to leap to its death so the hairworm can swim away happily. Including an introduction to parasite-host relationships, the main content in this volume will fascinate readers and supports the science curriculum. Detailed fact boxes and colorful photographs add even more fun, gross, and terrifying information about the zombie grasshopper and its terrible traveling companion, the hairworm.