The clip in my caption asks a question every dog owner has had at least once — is that a smile or a growl — and the honest answer is that you have to read the whole dog, not just the mouth.
You just caught your dog with their lips pulled back and teeth showing, and your gut says two things at once: that’s either the goofiest smile you’ve ever seen, or a warning. I get this question a lot, and it’s the exact one behind the clip I posted — “why he growling then?? Hmmmm or is it just smiling.” Both readings are reasonable, because the two expressions can look similar for half a second. The difference is in everything else the dog is doing at the same time.
Don’t judge the mouth alone
A bared-teeth expression by itself doesn’t tell you much. Some dogs do what’s commonly called a submissive grin — teeth showing, but the rest of the body is loose and low, not stiff and forward. According to guidance summarized by ASPCApro, reading a dog’s emotional state means looking at the whole animal together — ears, eyes, tail, posture, and mouth — because any one signal in isolation can be misleading. That’s the trap in a six-second video: you see teeth, and your brain jumps to a conclusion before you’ve checked the rest of the picture.
What actually separates a grin from a growl
A submissive or “smiling” dog usually pairs the open mouth with soft, squinted eyes, a lowered head, relaxed or wagging tail, and a loose body that may curve away from you rather than toward you. A dog that’s genuinely warning you tends to show the opposite pattern: a stiffer body, a more direct stare, ears forward or pinned, and weight leaning toward whatever they’re reacting to, often with an actual growl or a tense, closed-mouth “long lip” rather than a relaxed open one.
The American Veterinary Society of Animal Behavior points out that facial expressions and body postures work together, not separately — a relaxed face can turn tense in seconds if a dog starts feeling cornered or unsure, so the same dog can show you both signals within one interaction. That’s part of why a viral clip can look ambiguous even to an experienced eye: you’re seeing one frame of a longer, shifting conversation the dog is having with its environment.
What I’d actually watch for at home
If you’re trying to figure out which one you’re looking at with your own dog, don’t fixate on the teeth. Check three things instead:
The eyes — soft and squinty leans playful or submissive; wide, round, or showing white around the edge leans stressed or defensive.
The tail and body weight — loose, low, curved away from you is a friendlier read; stiff, high, or leaning forward is not.
What just happened — a grin usually shows up during greetings or when a dog is a little unsure but not threatened; a warning growl usually follows something the dog wants stopped, like being reached for, crowded, or startled.
If you put those three together and you’re still not sure, treat it as a warning rather than a smile. It costs you nothing to back off and give the dog space, and it avoids a bite if you guessed wrong. This is the same layered-reading approach I’ve talked about before when it comes to picking apart a dog’s recurring paw licking and scratching — you’re never diagnosing off one signal, you’re building a picture from several.
When to get help
If a dog is growling at familiar people or in familiar situations — not just strangers or clearly startling moments — that’s worth a conversation with your veterinarian or a qualified trainer, not something to wait out. Growling is communication, not just a “bad” behavior to shut down, and figuring out what’s triggering it matters more than making the sound stop.
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ba ba ba ba ba ba ba ba ba ba ba ba ba ba ba ba ba ba ba ba ba ba ba ba ba ba ba bába. I know you love.
Frequently asked questions
Is a submissive grin the same as a smile?
It's often called a smile because it looks similar, but it's really a social signal dogs use, usually paired with a soft, low body — not an emotion identical to human happiness.
My dog grins at me but growls at strangers — is that normal?
It can be. Many dogs are relaxed with familiar people and more guarded with unfamiliar ones. Watch the body as a whole in each situation rather than assuming one reaction predicts the other.
Should I punish my dog for growling?
No. Growling is a warning, not the problem itself. Suppressing it can remove the warning while leaving the underlying discomfort in place, which is riskier, not safer.
