17 Dogs Who Don't Know How To Smile But Are So Cute It Doesn't Matter

Defined By: An earnest attempt at a smile, but the upward angle of the lips is forced and the eyes show genuine hope for the future.

Defined By: A normal smile, but the eyes do not match. Rather, they appear to reflect a nervousness, possibly due to concerns about having a good smile.

Defined By: Often openmouthed. Accompanied by rigid posture and the appearance of straining to be as tall as possible.

Defined By: Close-lipped and miniature smile, with eyes that hint at evil secrets and ever-so-gently burn into your soul.

Defined By: Going to great lengths to display all 20 baby teeth.

Defined By: A crooked half-smile that creates an angle greater than 90 degrees.

Defined By: Eyes appear to be twitching, there are signs of movement and muscle strain, and a growing fear is apparent.

Defined By: Close-lipped smile, shoulders hunched, eyes expressing sheepishness.

Defined By: Only bottom row of teeth is visible.

Defined By: Eyes are "straight-up closed," and subject possesses a certain blissfulness about it.

Defined By: Openmouthed smile in which the subject appears to have been speaking when the picture was taken.

Defined By: Teeth are bared and eyes squinted. General expression mimics that of someone recently awaking from a nap.

Defined By: Subject's line of sight travels out of frame, and smile is wistful and dreamlike.

Defined By: Juxtaposition of severe doubt in the eyes and casualness of smile. Subject seems unimpressed by use of props, such as flowers and little twine necklaces.

Defined By: Halfhearted smile and detached eyes, usually emoting, "I wish I was anywhere but here."

Defined By: Overexaggeration of the smile, eyes, and eyebrows, and a full view of the tongue.

Defined By: Genuine happiness and cuteness in its purest form.