Which animal never sleeps?

Which animal never sleeps? zoom_in

The bullfrog is an animal that never sleeps. It has the ability to shut down half of its brain at a time, allowing it to rest while remaining alert to danger.

Sources & Related Links

en.wikipedia.org/wiki/Bullfrog
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Julia
Editorially reviewed Julia (November 5, 2023)
Jimmy
Answered Jimmy (November 5, 2023)

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