What’s cuter than a sleeping bear cub? Two sleeping bear cubs. Here are 31 photos of animals cuddling up and sleeping together in blissful slumber.

Interestingly enough, sleep time and habits vary greatly in the animal kingdom, even among mammals. Elephants sleep for only 3-4 hours a day due to the amount of time they must spend eating, while little brown bats may sleep for as many as 20 hours because they have the luxury of especially safe and hard-to-reach roosts. Marine mammals like whales and some seals are capable of sleeping with only half of their brain – the other half makes sure they stay afloat and that they resurface regularly.

Now check out these cute and beautiful images – we hope they give you sweet dreams.

h/t: distractify

Source: bear.org

Image credits: gagotino

Image credits: Dona Minúcia

Source: cutestpaw.com

Image credits: Jim and Jamie Dutcher

Image credits: Dana Cama

Image credits: unknown

Source: deviantart.com

Image credits: mountainpugs

Image credits: Paul Souders

Image credits: SilverblueCat

Image credits: BuckarooBob

Source: hamaileon1.blogspot.com

Image credits: unknown

Image credits: Sara

Image credits: Martha Hansen

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Source: dv.is

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Source: reddit

Source: flickr

Image credits: Stefan Betz

Source: imgur

Image credits: Raul Lieberwirth

Image credits: Jamie Lawson

Image credits: Chris Eason

Image credits: unknown

Image credits: Ruth Flickr

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Image credits: Brian Maxwell

Admit it – now you want to be a pillow too!

Image credits: Richard Austin

P.S. We always try our best to credit each and every photographer, but sometimes it’s impossible to track some of them. Please contact us if you know the missing authors.