We are. And we're loving it. "Grumpy Cat's Worst Christmas Ever" is set to debut 8 p.m. Saturday on Lifetime. Yup, the Internet sensation known as Grumpy Cat stars in his, or is it hers, own movie ...

On the cat’s website, her owners maintain that Grumpy Cat wasn’t grumpy at all. “She is a super cute and cuddly kitty and loves to be held and rubbed,” they wrote.

Related: Cat's Grumpy Reaction to Waking Up Is All of Us in the Morning Geez, this cat really has it out for his mom's boyfriend. And just look at how serious he is, for all we know, this little ...

Grumpy Cat tops Forbes' ranking of Top Pet Influencers, joining a list that includes such web luminaries as Pomeranian stars Jiff and Boo and precious cats Nala and Lil Bub.

Born on April 4, 2012, Grumpy Cat, whose real name was Tardar Sauce, became an instant Internet star when a photo was shared to Reddit in September 2012 with the caption, “Meet grumpy cat.” ...

Over Halloween weekend, Stan Lee got to meet Grumpy Cat. Sure, that’s kinda cool. I can only assume it was a heartwarming moment where two overexposed media titans met, stared at each other, and ...

Grumpy Cat shot to fame in 2012, when photos of her disgruntled visage were posted to Reddit. Since then, she's racked up more than 1.5 million Twitter followers, and 2.4 million followers on ...