This Grumpy Puppy Is Actually Quite Happy

— -- This grumpy puppy must be having a very, very bad day.

Or not.

Seems sourpuss is just Earl the dog's "look."

The five-month-old pup from Iowa isn't grumpy at all, his owner Derek Bloomfield said. It seems Earl's grumpy expression is due primarily to his under bite, but also his breed. A "puggle" -- beagle and pug mix, also isn't helping to lighted up his adorable mug.

Earl may be the perfect pup to teach humans a life lesson: Don't judge on looks alone. Although he looks fierce, Bloomfield said he's actually "super friendly" to humans and other dogs.