Snakes are considered reptiles which means that they have scales, breathe air, and usually lay eggs on land. Since a reptile breathes air they must live on land but that doesn't mean they don't spend time near the water or in the water. For example, water snakes are an example of a snake that live most of their lives near the edge of the water but need to physically live on land so they are able to breathe. Other examples of reptiles include crocodiles, lizards, and turtles. Amphibians, such as frogs, toads, and salamanders, on the other hand can live double lives as they have gills and lungs to breathe which can allow them to live on both the land and the water.