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  2. Sleep in animals - Wikipedia

    en.wikipedia.org/wiki/Sleep_in_animals

    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 ...

  3. Cat behavior - Wikipedia

    en.wikipedia.org/wiki/Cat_behavior

    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]

  4. Why does my cat sleep at my feet? An expert reveals the ... - AOL

    www.aol.com/why-does-cat-sleep-feet-120000932.html

    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.

  5. Why Do Cats Sleep So Much? Here's What You Need To Know - AOL

    www.aol.com/news/why-cats-sleep-much-reasons...

    Everyone needs a good cat nap. For premium support please call: 800-290-4726 more ways to reach us

  6. Cat - Wikipedia

    en.wikipedia.org/wiki/Cat

    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.

  7. This Is Why Cats Sleep So Much - AOL

    www.aol.com/news/why-cats-sleep-much-144625577.html

    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 ...

  8. Study Confirms Cats Grieve the Loss of Family Members ... - AOL

    www.aol.com/study-confirms-cats-grieve-loss...

    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 ...

  9. Rapid eye movement sleep - Wikipedia

    en.wikipedia.org/wiki/Rapid_eye_movement_sleep

    [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 ...