Who Lives in an Alligator Hole?

When an alligator finds a damp spot in muck, it digs and digs until it hits a wet layer. It settles in as the hole fills up with water-and then a lot starts to happen. Fish and insects come to lay eggs; birds come to eat the eggs; seeds in the bird droppings sprout; and more creatures arrive. An animal we know as a scary sharp-toothed predator is actually a "keystone species" that allows a whole ecosystem to survive. Activity and facts about alligators. Full-color art.