Pictures of Happy Dogs and Mad Cats

Dogs appear to make their way through life with very few moments of unhappiness, gladly following the next human who offers them a treat. Cats, on the other hand, are harder to please. Sure, you can pander to their milk habit with a saucer or a nibble of cheese, but what else have you done for them lately? We've consulted the world of Instagram to find five perky pups as well as five unamused — but equally adorable — cats.

Source: Instagram Users yukke_dalma, leonliu, aquacat, and dianamaria26