Lizards are coldblooded reptiles. Lizards usually lay eggs but there are some exceptions to that rule. There are a lot of different types of lizards, some are big, some are small. Lizards go all the way back to the age of the dinosaurs, they are one of the oldest types of animals.my favorite type of reptile are crocodiles because they are really good hunters, crocodiles can take down animals as big as wild cattle. All lizards are coldblooded so they must hibernate in the winter in order to survive. Most lizards eat small animals but the big lizards eat bigger animals.