18 photos of dogs with unforgettable and wacky smiles

Dogs are often attributed with human behaviors or expressions, sometimes translating a simple reflex into an attitude acquired through contact with humans. But what about the smile?

A facial expression borrowed from its masters or a real sign of well-being, this behavior is often due to its learning. Clearly, because it understands that this triggers a positive reaction to its human, such as a caress or attention, the dog curls its lips to show its teeth. This smile can also be a sign of calming, caused by relaxation, such as when sleeping or resting. The same goes for excitement or joy: the relaxation of his jaw and the opening of his mouth give him an expression that imitates a human smile.

Either way, a dog that shows its teeth and adopts a friendly, calm posture is a dog that “smiles” in its own way. And let's face it, this facial expression is as funny as it is cute and often gives him a completely wacky look!

Here are 18 dogs with unforgettable and goofy smiles.