This week, Grumpy Cat is coming to New York to promote the forthcoming Chronicle Books release, "Grumpy Cat: A Grumpy Book: Disgruntled Tips and Activities Designed to Put a Frown on Your Face" at BookExpo America, the publishing industry convention.

WSJ: Grumpy Cat Has an Agent, and Now a Movie Deal

At the South by Southwest tech convention in Austin, Texas, in March, he arranged a paid-appearance deal for Grumpy Cat from the website Mashable.

WSJ: Grumpy Cat Has an Agent, and Now a Movie Deal

Mashable, a CNN.com content partner, invited the Bundesens and Grumpy Cat to Austin as part of their SXSW party space, which celebrates Internet memes.

CNN: The unlikely star of SXSW: Grumpy Cat

The Bundesens declined to say exactly how much money they've earned off Grumpy Cat, although Bryan said it's in the mid-five figures.

CNN: The unlikely star of SXSW: Grumpy Cat

One woman said she came all the way from Australia to see Grumpy Cat.

CNN: The unlikely star of SXSW: Grumpy Cat

This is the first official public appearance for Grumpy Cat, who lives with her owner, Tabatha Bundesen, in Morristown, Arizona.

CNN: The unlikely star of SXSW: Grumpy Cat

Some swapped matzoh for the pink lines as Passover got under way, or added frowny Internet star Grumpy Cat, who explained marriage equality would make her happy.

NPR: Gay Marriage Equality Box Spreads On Social Media