• The American crocodile is lizard-shaped with a long, muscular tail and four short legs that have five toes on the front feet and four on the back feet. Male crocodiles can reach about 20 feet in length and weigh up to 2,000 pounds.
• They can live as long as 100 years.
• Crocodiles eat mostly fish, but are known to catch and eat anything that wanders near enough. They swallow their prey whole, usually after drowning it.
• Crocodiles eat rocks which stay inside the stomach and help to grind up their food. Some scientists say that this helps keep them from feeling hungry, or serves as extra weight while swimming or diving to stay stable in the water.
• Crocodiles build nests in the winter months by digging a hole using their back legs and lay between 30 and 50 eggs. The eggs take nine or ten weeks to hatch and the mother stays close to the nest. She will rest her head on the nest, listening for the calls of the hatchlings (similar to the sound of a barking dog). She will then dig them out using her front feet and crack the eggshell if the hatchling needs help.
• Unlike birds and mammals, the sex of embryos is not determined at fertilization, but by the temperature at which the eggs are incubated. Higher temperature (89-91) in the nest will produce more males, while lower temperature (below 88) produces females.
• The Everglades are the only place you will see crocodiles in the U.S.
• The Everglades are also the only place you will see alligators and crocodiles living peacefully together.