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Why do giraffe sleep standing up?

What animal sleeps the shortest?

The animal that likely sleeps the shortest out of all known species is the bat, in particular the big brown bat (Eptesicus fuscus). Bats have unique sleep patterns and can take multiple “chunks” of rest throughout the day.

Furthermore, a single chunk of sleep rarely exceeds 40 minutes. In fact, many bats can go without sleeping at all for up to 16 hours when active. In the wild, bats may also nap for only a few seconds at a time.

This sleep pattern results in bats getting between 2 and 20 minutes of total sleep per day.