A crocodile is a large reptile with thick, scaly skin, powerful jaws lined with sharp teeth, and a long tail that helps it swim. Crocodiles live in tropical rivers, lakes, and coastal waters across Africa, Asia, Australia, and the Americas. They're ancient creatures that have survived for over 95 million years, meaning they lived alongside the dinosaurs and outlasted them.

Crocodiles spend much of their time floating motionless in water with just their eyes and nostrils above the surface, watching for prey. Despite their bulky appearance, they can move with surprising speed both in water and on land. They're ambush predators, meaning they wait patiently and strike suddenly. A crocodile's bite is one of the most powerful in the animal kingdom.

People sometimes confuse crocodiles with alligators, but you can tell them apart: crocodiles have a V-shaped snout and their teeth show even when their mouth is closed, while alligators have a U-shaped snout and hide most of their teeth.

The phrase crocodile tears means fake crying or insincere sadness. It comes from an old myth that crocodiles weep while eating. When someone sheds crocodile tears, they're pretending to be upset about something they don't actually care about.