One kitten is not shy about letting his family know he is hungry and wants to be fed right that very minute! In a funny clip ...

The Portsmouth Humane Society takes in all kinds of smiling furry faces, but their newest guest comes off a little grumpy.

A North Carolina cat with a “grumpy” face waits for a second chance. Watauga Humane Society A toothless cat has a “grumpy grandpa face” — but don’t let it fool you.

CHP rescued a cat that had a striking celebrity resemblance, as it looked like the popular meme Grumpy Cat.

The Lancashire Fire and Rescue Service in the U.K. rescued at calico cat stuck between two walls in April. Based on the cat's frowning rescue photo, they weren't grateful for the help.

Lake Superior Zoo’s Pabu the Pallas Cat is not a domesticated cat even though he looks like it. Lead keeper Emily Perala notes that one of his defining features is his ‘grumpy’ looking face ...

This adorable dog and grumpy cat are an unlikely duo but their owner says they are best friends - despite the cat's face saying otherwise.

Lessons on Going Viral From Grumpy Cat, the Internet Sensation That Died at 7 Years Old Something unique, some Reddit love, and a strategy.

Like a Kardashian of internet memes, Grumpy Cat’s cultural influence extended to books, movies, celebrity appearances and more.