"People were spilling out into the streets. It kind of took our breath away. You hit the people that are the cat lovers, but you also get people who just like sharing something on the Internet, and it kind of reaches across age groups," said the museum's Scott Stulen, who worked on the festival and helped curate entries.
Corporate kittydom is happy with the higher profile for the cat meme, which actually goes back to the '70s, when swapping VHS tapes was big and the word meme was barely known. It means, by the way, all the crazy, viral themes that spread online faster than you can say nom, nom, nom (cat-vid speak for the sound of a cat eating).
In addition to the Walker's free night in cat-video heaven, Fresh Step litter sponsored Catdance, an evening of felines on screen that coincided with January's Sundance Film Festival in Park City, Utah. A fan-voted winner among five scripted finalists will earn $10,000 after online voting ends later this month.
In November, Friskies gave a lifetime-achievement statue to angsty existentialist Henri, le Chat Noir, at the brand's own awards ceremony and donated 250,000 cans of cat food to shelters around the country. Henri, the troubled Tuxedo, won another statue in Minneapolis and will soon begin a collaboration of food-focused videos with Friskies.
Oh, and Henri's putting out his first book in April.
Roly-poly Maru, the megastar in Japan, with millions of views for nearly 300 videos since 2007, has three books and a calendar, among other swag for sale. The squishy-faced, often blissed-out Scottish Fold who loves boxes and bags was used by Uniqlo in October when the Japanese brand launched its San Francisco store. Maru chose boxes, called "Lucky Cubes," stuffed with giveaways for human contest winners.
Not to be outdone, Simon's Cat, a funny feline in a series of line-drawn animated videos out of London, has a book and an online store, as does Henri, who lends his fame and some of his dollars to cat charities.
So why cats?
Cats are fluffy and unpredictable and usually kept behind closed doors, which lends them allure and appeal that other common pets - I'm talking to you, dogs! - don't seem to have when it comes to vapid, funny, or deranged video. At least that's what cat fans think.
"Cats are going to do what they want to do, and that's one of the reasons that we love them," said David Kargas, a Fresh Steps spokesman who worked on Catdance.
The gravy train for cat-vid-makers is a long one not likely to dead-end anytime soon. Consider the ad revenue from YouTube and other social networks and personal websites. But while commercial ads are often included on the sites, so are fans looking to help cats in need.
On the Facebook page of Simon's Cat, for example, people post to find homes for wayward cats. The Facebook page of Oskar the blind cat, who hit it big on YouTube as a kitten when he came home to his older buddy Klaus, raises awareness that disabled cats can make great pets.
Nobody knows the cat meme better than Ben Huh, who with a group of investors bought the I Can Has Cheezburger site in September 2007. The site, now an empire of sites for Huh, allows users to generate captions on cat photos using LOLcat speak, a language with spelling and syntax all its own.
Huh sees a healthy future ahead as cat memes spread and merge with other content.
"People are mixing and matching, and the content can't be put into neat little boxes anymore," said Huh, noting that Grumpy Cat's still photos pop up just about anywhere nowadays. "That's the irony. That has caused the Cat Internet Industrial Complex to continue to grow."