Animal Sleep Facts
Every animal here has its own page, so you can dig into one creature at a time. New sleepers are added regularly.
How does a elephant sleep?
Sleeps about two hours a night — often standing up.
~2 hours a day
How does a dolphin sleep?
Rests one half of its brain at a time, with one eye open.
half-asleep, all day
How does a giraffe sleep?
Grabs about thirty minutes of sleep a day, in tiny bursts.
~30 minutes a day
How does a worker ant sleep?
Takes around 250 mini-naps a day, one minute each.
250 naps a day
How does a sloth sleep?
Snoozes up to fifteen hours while hanging upside down.
up to 15 hours a day
How does a house cat sleep?
Spends up to sixteen hours a day in dozens of catnaps.
12–16 hours a day