| Humans tend to adore cats despite some of their more difficult tendencies, which include sprawling across laptops and books, delivering (unwanted) gifts of mice, and begging for a food refill before their bowl is even empty. Not to mention keeping their pet parents up all night with loud yowls and frenzied midnight runs. But who can blame a house cat for the mischief they get up to in the wee hours? After all, cats sleep around 15 hours per day, so it makes sense that their bedtime routines don't align with ours. However, cats don't bank all those hours of rest at once. While sleep habits can vary by breed, domesticated cats generally take frequent catnaps lasting 15 to 30 minutes each, followed by bursts of activity, and then occasional periods of deeper rest. Feline researchers believe cats' unique sleeping patterns evolved from their need to store energy between hunts. Prowling for and pouncing on prey is a major energy drain, and resting after hunting and eating allows cats to prepare for their next pursuit. However, cats have developed different styles of sleeping to still be aware of the world around them during their daytime naps. Catnapping felines remain partially awake, can still move their ears and tails, and even keep their eyes partially open to detect danger. When they do doze more deeply, cats experience REM sleep just like humans — one reason scientists believe they dream like us, too. | 
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