Exactly why is this video so cute?

Jenna and I both love to watch this video of a slow loris:

So, why do we like this thing so much? Check out this chart:

According to “A Biological Homage to Mickey Mouse” by Stephen Jay Gould [PDF]:

Humans feed affection for animals with juvenile features: large eyes, bulging craniums, retreating chins (left column). Small-eyed, long-snouted animals (right column) do not elicit the same response.

So let’s examine the slow loris. Large eyes? Check. Bulging cranium? Check. Retreating chin? Check. Cutest animal ever.