Crocodiles and alligators are often confused but can be differentiated based on their snouts, jaws, coloration, and habitats. Crocodiles have a more v-shaped snout and interlocking teeth that are always exposed, while alligators have a wider u-shaped snout and lower teeth that are hidden. Crocodiles tend to be a lighter olive brown and live in saltwater habitats across the Americas and China, whereas alligators are darker green and live in freshwater rivers, ponds, and wetlands in the southern United States.