What do you know about lizards? Use this free quiz to check your knowledge about reptiles and amphibians and learn what you didn't know before about these animal species. Download this quiz with answers and discover new facts about frogs and toads. Have fun!
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Why do alligators like to lie in the sun - do you know? Apart from this one, the quiz includes various questions about reptiles and amphibians. These two groups are similar in many ways, and they are in fact distantly related, but there are several primary distinguishing features that clearly separate the two. This animal group includes turtles, snakes, crocodiles. There are a number of typical physical differences between the two types of animals, they often live in different environments, and they have different life stages. The animals' relationship with water is at the heart of many of these characteristics. At the most basic level, amphibians must spend at least some of their time in water. Frogs, toads and salamanders all belong to this group.
Reptiles, however, aren't required to be near water. It is true that many of them live in the vicinity of water, and some, such as alligators, strongly prefer a watery habitat, but this is not strictly essential for them to stay alive. Some, including certain lizards and snakes, are ideally suited to dry environments such as deserts, and rarely encounter moist areas. By contrast, many amphibians must remain moist in order to breathe; although they do have lungs, they also take in oxygen through their skin. This thin skin means that they lose moisture easily as well, and some will even die if their skin dries out completely.
Although both species are cold blooded, meaning that that their body temperatures fluctuate depending on their environment, the two are very different in appearance and physical makeup. Reptiles are covered in distinctive scales, and some may even have a rough texture. This is not true of amphibians, which typically have smooth, moist skin.