While most pitcher plants are small, some of them are large enough to capture frogs, birds, and even snakes! To digest animals of this size, the plants have to produce a lot of enzymes. These enzymes break down whatever falls into the plant. This is just like the enzymes in your stomach that break down the food that enters your stomach. Most animals try to avoid the pitcher plants because they do not want to get eaten. However, there are reports of bats using the plants as places to sleep. The bats are very careful not to come in contact with the enzymes, so they roost under the leaves.