These creatures can either fit in a small tank or be as big as a giant stone, depending on what species they are. They're covered with a shell that defends and shelters them when they go inside it. Like lizards, they can also live in almost any habitat. The only places they don't live are most places in Australia, and the continent of Antarctica. They mainly eat insects, slugs, and leaves. Although they are slow creatures, they can live up to 100 or even 120 years! Fun fact: Tortoises have been around for 230 million years!