Grumpy Cat may be the spirit animal of the 21st century, but for all we know, the relatives of this sourpuss may have hated on humans since the dawn of mankind.
In this comic, artist Lonnie Easterling from Spud Comics proves that even cavemen knew of Grumpy Cat's notorious crabbiness.
Credit:
BONUS: Grumpy Cat Wants No Part in Your Silly Fairy Tales
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