1. As squamates evolved over long periods of time, some species lost their limbs. What special advantages do limbless animals have? What challenges do they face and how have they overcome them?

• Snakes • Snake Anatomy • Deadly Snake Hunt

2. How do squamates differ from other groups of animals?

• Insects • Potato Beetle • Amphibians • Frog • Crocodiles and Alligators • Chinese Alligator • The Body Systems of Birds