They were never extinct, but they were almost; in the 19th century and early 20th century, they almost died out completely, but then it was declared illegal to hunt them down in America. They are now flourishing and are frequent attractions for tourists.
CORRECTION: The apex of the American Alligator killings was between 1870 and 1970, when it is estimated more than 10 million of them were killed.
Alligators number in the millions in the U.S. The Chinese alligator is rare, and numbers are less than 1000.Chinese Alligators (Alligator sinensis) and American Alligators (Alligator mississippiensis) are the only surviving species of alligators. There were other species of alligators but they are all extinct now.
Because alligators were born after
The American alligator's closest extinct relative is the Deinosuchus, a genus of giant alligator-like crocodilian that lived during the late Cretaceous period. It was much larger than modern alligators, with some species reaching lengths of up to 40 feet.
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It would perhaps disrupt the 'food chain' a bit (although the American Alligators would compensate for this), but not really. However, it would be a shame to lose another species of crocodile when so many are becoming extinct...
Of course they are. All alligators are reptiles (not amphibians).
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Humans are the only animals killing American alligators, through hunting and habitat loss.
Black bears don't eat american alligators.
they enjoy swimming.
Chinese alligators are American Alligators used to but now they are protected
The male american alligator is larger. Male american alligators are 14 ft in length and weigh up to 1000 pounds. Female american alligators are up to 10 ft in length and weigh over 500 pounds.