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how much do cats sleep

Most healthy adult cats sleep around 12–18 hours a day, with many averaging about 15 hours and some napping up to 20 hours in a 24‑hour period.

Quick Scoop

Typical cat sleep hours

  • Average daily sleep: about 14–15 hours.
  • Common range: 12–18 hours per day for most cats.
  • Heavy snoozers: some perfectly healthy cats reach 18–20 hours of sleep in a day.

Age makes a big difference

  • Kittens: often sleep up to around 20 hours a day because they are growing fast and burn lots of energy in short bursts.
  • Adult cats: usually settle into roughly 12–16 hours, depending on activity level, lifestyle (indoor vs outdoor), and personality.
  • Senior cats: tend to sleep longer and more deeply as they slow down with age and possible health or mobility issues.

How cats sleep (not like us)

  • Cats are polyphasic sleepers, meaning they sleep in many short chunks instead of one long stretch.
  • A single “cat nap” often lasts under two hours, with typical sleep bouts around 50–113 minutes.
  • Much of that time is light sleep so they can wake quickly; only brief parts are deep REM sleep.
  • They are naturally crepuscular, most active at dawn and dusk and more likely to snooze when the house is quiet.

Why cats sleep so much

  • Cats evolved as predators, so they conserve energy between “hunt” periods, even if the “hunt” is now a food bowl.
  • Indoor cats may sleep more out of boredom if they do not get enough play or stimulation.

When to worry

Sleeping a lot is normal, but these changes are red flags and worth a vet visit:

  1. A sudden increase or decrease in sleep time compared with your cat’s usual pattern.
  1. Lethargy when awake (seeming weak, not interested in food, play, or people).
  1. Other signs like weight loss, hiding, breathing changes, or using the litter box differently.

A simple rule of thumb: if your cat is sleeping somewhere in the 12–18‑hour range, wakes easily, eats, grooms, and plays normally, their epic naps are probably just classic cat behavior.

Information gathered from public forums or data available on the internet and portrayed here.