how can you tell the difference between an alligator and a crocodile?
['Snout shape: Alligators have wider, U-shaped snouts, while crocodile front ends are more pointed and V-shaped.', "Toothy grin: When their snouts are shut, crocodiles look like they're flashing a toothy grin, as the fourth tooth on each side of the lower jaw sticks up over the upper lip."]