Me: Does he pay them to stand guard?
BigBoy: No. It pokes them in just the right place to make them mostly dead but not all dead. Basically it builds a wall of zombie caterpillars to sting the rats that try to get in.
More than I ever wanted to know.
This is what happens when you let your kids read National Geographic for Kids. Correction: BigBoy says it was actually National Geographic Angry Birds: 50 True Stories of the Fed Up, Feathered, and Furious.