To most Internet users, Grumpy Cat - the feline with a furry frown - is a minor celebrity that capitalized on the popularity of memes in 2012 as a perpetual sourpuss. One of the most famous images of ...

Cats are known for being patient only when they want to be, and one viral video of a grumpy feline shows just how quickly that patience can disappear. In the clip, a cat’s calm mood changes right away ...