Happy World-Cat Day! Here are famous cats of the Internet

Grumpy Cat arrives with his owner Tabatha Bundesen at the 2014 MTV Movie Awards in Los Angeles,...

Grumpy Cat arrives with his owner Tabatha Bundesen at the 2014 MTV Movie Awards in Los Angeles, April 13, 2014. REUTERS/Lucy Nicholson

, QMI Agency

, Last Updated: 12:18 PM ET

Aug. 8 is World-Cat Day, also known as International Cats Day. The event was founded in 2002 by the International Fund for Animal Welfare and other animal rights groups, according to the Cute Calendar. (Yes there is such a thing as a "cute calendar"!)

In honour of this sacred day, here is a list of some of the more famous cats on the Internet.

Grumpy Cat

Probably the most famous cat on the Internet is Grumpy Cat. Born on April 14, 2012, the cat was given the name Tardar Sauce by its owner Tabatha Bundesen. But the cat became a meme known as Grumpy Cat when photos were posted to Reddit in September 2012. The permanent grumpy expression on its face is due to feline dwarfism and an under bite.

Now Grumpy Cat has appeared on various TV programs, such as the Today Show, Good Morning America, American Idol and The Bachelorette. There were even rumours, or at least a joke video by Mashable, that the cat was going to replace David Letterman.

Grumpy Cat also has tons of merchandise from mugs to shirts to plush toys even a book. It was named 2012's most influential cat by MSNBC, got BuzzFeed's Meme of the Year Award at the 2013 Webby Awards and the Golden Kitty at the second annual Internet Cat Video Film Festival.

It has also won a Lifetime Achievement Award at the 2013 Friskies, for which it has appeared in several online commercials.

On June 11, 2014, Lifetime announced it will be producing Grumpy Cat's Worst Christmas Ever a TV movie about the cat.

Lil Bub

Second only to Grumpy Cat is Lil Bub. Born on June 21, 2011, this cat also became famous to due physical anomalies, giving it a unique disposition. Like Tardar Sauce, Lil Bub has feline dwarfism but also has a shorter lower jaw with no teeth so its tongue hangs out, giving it a permanent panting expression. In addition, it has osteoperosis and polydactylism (meaning it has extra toes on its paws).

Photos of the cat were first posted to Tumblr in November 2011 and then went viral on Reddit. And it also has videos on its YouTube channel.

Lil Bub has also appeared on various TV shows, such as Good Morning America and The View, has appeared in Bullet and Bloom magazines and has a book.

Its documentary Lil Bub & Friendz (which also featured Grumpy Cat) debuted at the Tribeca Film Festival on April 18, 2013.

Hamilton the Hipster Cat

Hamilton the Hipster Cat get its name from the white fur over its lip giving the look of a moustache.

As its Facebook page states, it "has a real mustache that is better than any mustache that has ever walked this planet."

Indeed, it does. It's certainly better than most moustaches you find on someone in the steam punk community.

The page also says that Hamilton the Hipster Cat was likely born on July 4, 2012.

And its Instagram page, states it has joined a Greenpeace campaign to save the tigers. (Lil Bub is part of the campaign too.)

Maru

Maru is a Scottish Fold cat who has taken YouTube by storm. Most of its videos feature the feline lying around or playing with cardboard boxes and bags. It also has a blog.

Born on May 24, 2007, it originally starred in the videos itself, but now shares the spotlight with a Chiba cat named Hana.

According to Wikipedia, the videos have been viewed over 200 million times, and each video has an average of 800,000 views.

A book and DVD called I am Maru was released in Japan in 2009, a second DVD Maru Desu was released in 2010 and a second book came out in 2011.

In Memoriam...

While there a countless other famous Internet cats that could be added to this, we will end it off with two former Internet celebrities.

First, there is Colonel Meow (Oct. 11, 2011 - Jan. 29, 2014) who holds the Guinness World Record for longest fur.

Its famous scowl made it a celebrity when its owners posted photos of it to Facebook and Instagram.

And finally there is Keyboard Cat.

The meme started after its owner Charlie Schmidt posted an old 1984 video to YouTube of his cat Fatso in blue shirt "playing" a keyboard.

Although the video was posted on June 7, 2007, Fatso had been dead since 1987. Another YouTuber Brad O'Farrell got permission for him and anyone else re-use the footage and the meme was born.

Most people put the clip at the end of other viral videos or bloopers, and added the title "Play him off, Keyboard Cat."

According to Wikipedia, over 4,000 of these videos exist and Keyboard Cat was ranked No. 2 on Current TV's 2009 list of 50 Greatest Viral Videos.

The meme has also been seen on The Daily Show, The MTV Movie Awards and Tosh.O among other places.

So Keyboard Cat, please play off this list...


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