The bullfrog and lizard are two distinct species of amphibians and reptiles, respectively. They differ in their physical characteristics, habitat, and behavior. The bullfrog is a large, green amphibian that lives in freshwater habitats such as ponds and lakes. It is known for its loud croaking sound and powerful legs that allow it to jump long distances. On the other hand, the lizard is a small, scaly reptile that lives in a variety of habitats, including deserts, forests, and grasslands. It is known for its ability to climb trees and walls and its long, slender tail. Despite their differences, both species play important roles in their ecosystems.