including turning the cat into Gary the Snail from Spongebob or even replacing the rainbow flag with flags of other countries. Grumpy Cat may be a popular internet sensation for looking so grouchy.

Here are the 15 funniest Far Side comics starring grumpy old men ... base gags of old dogs being too tired to chase a cat, but it takes Gary Larson to give the cat a mailbag so it's even more ...