How Lizards Use Energy

When an animal takes in energy (by eating food), it then can use this energy for all sorts of different reasons — for example, to keep its heart beating, or to run away from predators. The lizards we see use most of their energy for things like breathing, digesting food, growing, and flirting. They lose energy in their pee and poop (scientists call this “excretion”), and in the skin they shed as they grow.