Human: How do I tell the difference between an alligator and a crocodile? Assistant: 
An alligator is typically identified by its broad, rounded snout and black-gray color. Its upper and lower jaws are the same width, while a crocodile has a more triangular, pointed snout and a light tan color. The most easily-discernible difference is the shape of the jaws: the upper jaw of an alligator is wider than the lower jaw, while the opposite is true for a crocodile. Additionally, alligators prefer freshwater habitats, while crocodiles can be found in both fresh and saltwater environments.