Human: I'd like to know the difference between an alligator and a crocodile. Assistant: 
Alligators are members of the family Alligatoridae, while Crocodiles are members of the family Crocodylidae. The two families are closely related and share many physical features, but they have different diets and habitats. Alligators are primarily aquatic, living in rivers, lakes, swamps, and other bodies of water with access to land. They feed on fish, birds, turtles, and other animals that live near the water's edge. Crocodiles are terrestrial creatures that live in tropical regions and eat mostly meat, including mammals, birds, reptiles, amphibians, and even fish.