The funniest and most humorous cat videos ever!

Why are we ticklish? Scientists who tickled rats offer an intriguing answer

Need a good laugh? The feeling is pretty universal, according to researchers who tickled rats for the sake of science.

Do Animals Laugh? Tickle Experiments Suggest They Do

Studies of laughing chimpanzees and rats offer clues about our evolutionary past—as well as our mental health.

Your Cat Etiquette Guide: Help Your Cat Be a Good Host to Houseguests

Your cat may be uneasy having extra or unfamiliar people in her space during the holidays. Help your kitty be a good host by following these simple etiquette tips.

Don't Make These 5 Cat Owner Mistakes

Is your cat getting enough water? The right exercise? Appropriate medical care? Dr. Marty Becker shares 5 common mistakes cat owners make and how to avoid them.

Palliative pooches: When dogs make the rounds

Severely demented patients who have lost most of their mental capacities often seem to connect with dogs on a deeper level. These patients smile, laugh, and occasionally cry, as they run their fingers through my poodles’ curly hair. A patient may shy away from the offer of another person’s hug or a touch of the hand, but they gladly squeeze my dogs, pet their heads, and accept kisses and comforting physical contact with their canine visitors.

Ever Seen a Lion Laugh? No?

Allen C. in Decatur, Illinois, writes:Are humans the only animal that laughs at something it thinks is funny? Marilyn responds:Yes. Some researchers have stretched the definition of laughter to include noises that some animals make when they are tickled, but that’s a different concept. You’re referring to a sense of humor, which makes use of [...]

Do tickled animals laugh?

Scientists are studying footage of how animals respond to being tickled in a bid to shed light on how laughter evolved.

How Do Animals Laugh?

Why Is Your Dog Laughing?

Is it possible that some research projects -- especially experiments that use animal models to study human emotions -- have been compromised by the fact that we don't know what the animals are saying to each other?

The internet laughs with dad who brings home the wrong dog from PetSmart

One dad has the internet in tears after he bought home the wrong dog from PetSmart. His son's had to convince him that it was a different dog.

Big Laugh When You Find Out What This Senior Cat is Thinking

Watch this hilarious video of a senior cat leaving notes for his pet parents!

Kitty Quirks: 15 Reasons Why We Love and Laugh at Our Cats

They stare, they knead, they lose control, they trip us -- and it's all part of why we love them.

Cats v dogs: which animal owns the internet?

From Lolcats to keyboard cat, have the grumpy, complicated and just plain weird felines lost ground to their cute, friendly canine sworn enemies?

This dog who can't stop laughing at your

12 surprising cat facts from Japanese Internet users

While dogs are also popular in Japan, many pet lovers here, perhaps due to the small size of homes, choose a cat for their animal companionship fix. Although the gap between the number of pet cats and dogs isn’t particularly wide here, cats seem to hold a much stronger fascination for Internet users than their can ...

Kid talks on toy phone while pushing cat on stroller, then does this. Watch

The video of the kid and the cat has left people laughing out loud.

Weatherman Brings Dog On Air. What Happens Has MILLIONS Laughing!

What happens when a local TV news station decides to promote dog adoption and tell the weather at the same time? Well, I guess you can say it was a beautiful disaster and success all at once! This adorable dog, …

Laughter is a key part of play for many animals

Play is a complex social interaction, often signaled by laughing. But it turns out, humans aren't the only animals who "laugh."