Grumpy Cat

That's Grumpy Cat. 

She is one of the most famous Cat in Internets, Commercials, Internet Meme, 

and even in Books. 

Grumpy Cat was born
on Wednesday, April 4, 2012. 

I think another Name for Grumpy Cat was Tartar Sauce. 

That Grumpy Cat has a
grumpy Look on her Face 

which was caused by
Underbite and Feline Dwarfism.