OK, you're right; not all of the animals below are actually laughing, but they sure do look like they're having a good time!

 
Laughing animals: Chimps

Photo: Shutterstock

The chimpanzee on the left is testing out new material for his comedic stand-up routine.

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Laughing animals: Elephant

Photo: David Woo/Flickr

This elephant is physically unable to contain his joy and excitement.

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Laughing animals: Cheetah

Photo: Tambako The Jaguar/Flickr

This chortling cheetah is reminiscing on an exceptionally hilarious memory involving a wildebeest and a guineafowl.

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Laughing animals: Otter

Photo: Shutterstock

Someone call the vet! This otter is suffering from a serious giggling fit.

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Laughing animals: Zebra

Photo: Fraser Mummery/Flickr

This zebra's hobbies include chuckling, guffawing and cracking up.

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Laughing animals: Squirrel

Photo: Shane Gorski/Flickr

This squirrel is tittering about that mustard stain on the front of your shirt.

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Laughing animals: Elephant seal

Photo: Shutterstock

This elephant seal just looked at himself in the mirror.

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Laughing animals: Cat

Photo: Shutterstock

This cackling cat is actually laughing at his own joke.

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Laughing animals: Dog

Photo: Josh Dubya/Flickr

This dog just can't.

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Laughing animals: Seal

Photo: Shutterstock

This seal is literally rolling on the floor laughing.

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Catie Leary is a photo editor at Mother Nature Network. Follow her on Twitter and Google+.

Catie Leary ( @catieleary ) writes about science, travel, animals and the arts.

10 laughing animals that will leave you in stitches
Not all of these animals are actually laughing, but they sure look like they're having a good time!