On average, 2-year-olds typically sleep about 11-14 hours in a 24-hour period.
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Baby tortoises can sleep anywhere from 18 to 24 hours when they're young. Their need for sleep diminishes slightly as they get older.
A micro sleep typically lasts for a few seconds to a few minutes. It is a brief period of unintentional sleep that can occur when a person is sleep deprived or fatigued.
In the 17th century, Europeans typically followed a segmented sleep pattern, known as biphasic sleep. They would have a first sleep period that started shortly after dusk, wake up for a period of 1-2 hours in the middle of the night for quiet activities, and then return to sleep until dawn. This segmented approach to sleep was common before the Industrial Revolution and the widespread adoption of artificial lighting.
Jaguars typically sleep for around 12-15 hours in a 24-hour period. This allows them to conserve energy for hunting and other activities.
Porcupines typically sleep in dens or burrows in the wild.
Bullfrogs typically sleep for about 12 hours a day.
Passengers typically sleep in sleeping compartments or seats that recline on a train journey.
Geese typically sleep for about 6-8 hours during the night.
Albert Einstein typically got around 10 hours of sleep per night.
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A snooze is a short period of sleep, or a figurative term for something which is boring.