— -- This grumpy puppy must be having a very, very bad day.
Or not.
Seems sourpuss is just Earl the dog's "look."

Earl, the very grumpy five-month-old puppy is shown in this photo. The peeved pup went viral when a picture of him sporting his best sullen expression was posted on Reddit and quickly gained more than two million views.
Caters News Agency
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, the very grumpy five-month-old puppy is shown in this photo. The peeved pup went viral when a picture of him sporting his best sullen expression was posted on Reddit and quickly gained more than two million views.
Caters News Agency
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.