Reptiles are fascinating creatures that include snakes, lizards, turtles, and crocodiles. They are cold-blooded, which means their body temperature changes with the environment. Many reptiles, like the green iguana, can be found basking in the sun to warm up. Some, like the king cobra, are known for their unique adaptations, such as venom that helps them catch prey. Turtles are another interesting group of reptiles, recognized for their hard shells that protect them from predators. The sea turtle, for example, spends most of its life in the ocean and can travel thousands of miles. Reptiles play important roles in their ecosystems, helping to control pest populations and maintain balance in nature.