It's basically just a hollow, clear plastic ball with some little air holes in it. They usually either come apart in two halves or have a little removable door in them so you can put a small animal like a rat or hamster or something in it. Then they can run around all they like without the risk of getting lost or stepped on.
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It's basically just a hollow, clear plastic ball with some little air holes in it. They usually either come apart in two halves or have a little removable door in them so you can put a small animal like a rat or hamster or something in it. Then they can run around all they like without the risk of getting lost or stepped on.