Grumpy Cat has millions of social media followers, shots of her famous frown go viral, and fans clamor to catch a glimpse. Face it: Grumpy Cat is a celebrity, and guess what? She probably makes more money than you do!
Grumpy Cat is part of an elite group of furry animals around the globe who have shot to Internet fame in recent years. These fuzzy creatures sign book and movie deals, do photo shoots, and act as "spokesanimals" for ad campaigns -- netting piles of cash for their owners.