3 min read


Can Dogs Know How to Smile?



3 min read


Can Dogs Know How to Smile?


We’ve all been there. That moment when you look at your pup staring back at you with gleaming eyes, a wet, pink tongue sticking out, and what looks like a super-sappy smile. You think to yourself, “Aw my pup must be so happy!” But is your dog really smiling the way us humans do? Is this pure dog-bliss?

We're going to delve into the science behind smiling pooches, along with signs that often lead people to believe their pups are grinning.


Signs You May Think Your Dog is Smiling

It is quite possible to gauge your dog's body language to determine how your dog feels. Dogs that are genuinely happy tend to exhibit a general looseness to their bodies.

If the sides of your dog's mouth point upwards, that often, but not always, signifies that all is well. You can learn even more from your pup's tongue. A tongue that hangs loosely combined with a mouth hanging open can point to a good, happy mood. 

Although dogs don't actually smile like humans, they sometimes happen to make expressions that look like smiles. You may see some behaviors in your dog that lead you to believe your pup is smiling. If your pup has all their teeth bared, that’s usually a warning sign telling you to back off. However, you may also see forms of “smiling” after giving your pup treats or petting.

Body Language

Here are some signs you may interpret as "smiling":<br/>

  • Head Tilting
  • Wag Tail
  • Lip Licking
  • Tongue Hanging
  • Exposed Teeth

Other Signs

Other "smiling" signs include:

  • Being Extra Playful
  • Lips Curved Upwards At The Ends
  • Relaxed
  • Bared Teeth

The History Behind Doggie Smiles


In wolves and other canines, a "smile" indicates nervousness or even signals the acceptance of subordination. As descendants of wolves, dogs also are also internalized to interpret smiles this way.

The expression we call a smile is really just an indication that the dog is not threatening to overturn the status quo. Alpha dogs or leaders of the wolf pack don't really "smile" because these doggos think of themselves as our equals and have no need or desire to signal subordination. 

The Science Behind Doggie Smiles


In a 2012 study, neuroscientists examined both humans and animals, discovering that animals too have consciousness and emotions. When dogs feel content, they tend to exhibit loose or relaxed body language. This can include facial muscles tending to be relaxed, a mouth that may hang open (or a tongue hanging out), and the corners of the mouth turned upwards. Although experts say dogs can have emotions, they can be hard to read or understand.

Researchers have ultimately concluded that dogs don't actually smile the way humans do. What we see is the result of submissive behavior and automatic responses, rather than an enjoyment of happiness.

Additionally, a dog's smile may indicate another feeling, like anxiety or nervousness. If your dog is "smiling" while also panting heavily, whining and chattering their teeth, you may want to consult your veterinarian.

Training Your Dog to Smile


Although your pup may not experience happiness the same way humans do, it is possible to train your dog to "smile."

You can do this by rewarding your pup for “smiling” in the form of treats, belly rubs, or even just general excitement and "good boys." The positive reinforcement will teach your dog that every time they perform a "smile," a reward is coming.

Also, some studies have revealed that our dogs do mimic our facial expressions to some extent. If you have a clever pupper that tends to copy you, why not try to put in some smile time? Make sure there are no distractions, have your dog sit, and give them some over-exaggerated grins while saying "smile" right after. 

If they begin to make a similar expression, immediately reward them with a small treat and praise. Repeat the sessions regularly, but keep them fun and short to be the most effective - and always end on a high note!

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Safety Tips for "Smiling" Dogs:

  1. Remember those bared teeth are not a smile, but a warning to back off!
  2. Be cognizant of how your pup is feeling, and analyze all of your pup's behaviors to determine if your pup is content or possibly anxious or distressed.

By Olivia Gerth

Published: 03/18/2018, edited: 04/06/2020

Wag! Specialist
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