Linnaeus determined that all reptiles share two key features: They have scales, and they are ectothermic, or "cold-blooded," meaning they must rely on external sources of heat to regulate their ...

The common lizard, smooth snake and slow worm can also be found living in the UK and reptiles are found living all over the world. The Komodo dragon is the heaviest lizard on earth. It lives on land.

Our five-day reptile unit plan dives deeper into exploring these common characteristics, particularly uncovering more about a All About Reptiles: A 5-Day Unit Plan for Kids Skip to main content ...