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Sleep can follow a physiological or behavioral definition. In the physiological sense, sleep is a state characterized by reversible unconsciousness, special brainwave patterns, sporadic eye movement, loss of muscle tone (possibly with some exceptions; see below regarding the sleep of birds and of aquatic mammals), and a compensatory increase following deprivation of the state, this last known ...
More than half of cats sleep between 12 and 18 hours a day, sometimes even more. Most cats sleep more as they age. [27] An alert cat at night, with pupils dilated and ears directed at a sound. Domestic cats seem to be comparatively flexible with regard to the times of day and night they are active or asleep. [28]
Cats love warmth, as any cat owner with a radiator bed can tell you! And your feet are just the right temperature to give your cat a gentle heat. Not too hot, not too cold.
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Cats conserve energy by sleeping more than most animals, especially as they grow older. The daily duration of sleep varies, usually between 12 and 16 hours, with 13 to 14 being the average. Some cats can sleep as much as 20 hours. The term "cat nap" for a short rest refers to the cat's tendency to fall asleep (lightly) for a brief period.
According to the National Sleep Foundation, cats are crepuscular animals, meaning that they snooze during the day and become alert between dusk and dawn (just like lions and other large cats ...
Cats are generally tired during the day and can sleep a lot, so it's not unusual for them to sleep out of view. This can make it more challenging to see their grief, whereas a dog who has high ...
[10]: §9.1–2 263–282 (PGO waves have long been measured directly in cats but not in humans because of constraints on experimentation; however, comparable effects have been observed in humans during "phasic" events which occur during REM sleep, and the existence of similar PGO waves is thus inferred.) [15] These waves occur in clusters ...