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.

* * * 
 
Laughing animals: Elephant

Photo: David Woo/Flickr

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

* * * 
 
Laughing animals: Cheetah

Photo: Tambako The Jaguar/Flickr

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

* * * 
 
Laughing animals: Otter

Photo: Shutterstock

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

* * * 
 
Laughing animals: Zebra

Photo: Fraser Mummery/Flickr

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

* * * 
 
Laughing animals: Squirrel

Photo: Shane Gorski/Flickr

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

* * * 
 
Laughing animals: Elephant seal

Photo: Shutterstock

This elephant seal just looked at himself in the mirror.

* * * 
 
Laughing animals: Cat

Photo: Shutterstock

This cackling cat is actually laughing at his own joke.

* * * 
 
Laughing animals: Dog

Photo: Josh Dubya/Flickr

This dog just can't.

* * * 
 
Laughing animals: Seal

Photo: Shutterstock

This seal is literally rolling on the floor laughing.

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