human
I'd like to know the difference between an alligator and a crocodile.
assistant
An alligator is a species of crocodile that lives in North America, while a crocodile is a genus of reptiles that includes both gharials and true crocodiles. Alligators are generally smaller than true crocodiles, with adults typically measuring less than 6 feet (1.8 meters) in length. Gharials can grow up to 12 feet (3.6 meters) long, but are not found in North America.