They have a tongue, but it doesn't help in their digestion. Crocodiles eat rocks which stay inside the stomach and help to grind up their food. Some scientists say that this helps keep the crocodiles from feeling hungry, or serves as extra weight while swimming or diving, to stay stable in the water. The American crocodile has an interesting way of attracting fish to them. They throw-up a very small bit of food which attracts fish making them much easier to catch.
Crocodiles are cold-blooded and live in warm climates.
They excavate burrows along the water's edge. They live in salt water or in brackish water along the coastline or coastal river mouth. They emerge from the water, or their burtrows, to raise their body temperature by lying in the sun. During the dry season, they may become sluggish, refuse to eat, and bury themselves in the mud. Crocodiles can live a very long time, as long as 100 years, as long as their environment stays stable.