Dogs / Behaviour

Understanding Dog Body Language: Why Dogs Show Their Teeth

A dog with their lips pulled back and teeth on show can be sending one of two almost opposite messages, and telling them apart matters both for safety and for not misreading a friendly dog as aggressi

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In this guide

A dog with their lips pulled back and teeth on show can be sending one of two almost opposite messages, and telling them apart matters both for safety and for not misreading a friendly dog as aggressive.

The submissive grin

Some dogs, more often those that are highly people-oriented and sensitive to social cues, offer what's called a submissive grin: lips pulled back to show the front teeth, usually paired with a low, wiggly body, soft or squinted eyes, and a low, loosely wagging tail. This isn't aggression at all; it's an appeasement signal, roughly translating to "I mean no harm" or "you're in charge here," often shown during an enthusiastic greeting or when a dog senses mild tension and wants to defuse it. Not every dog does this, and it tends to run in certain lines and personalities rather than appearing universally.

The warning snarl

A genuinely aggressive display looks different: lips drawn up more vertically to expose the canines and often the top gums too, a stiff, forward-leaning body, a hard, fixed stare, and a low, rigid tail rather than a loose wag. This is a clear warning to back off, frequently paired with a low growl, and should always be taken seriously and given space rather than approached.

Reading the whole dog, not just the mouth

The mouth alone is rarely enough information on its own. A relaxed, wiggling body with soft eyes points towards a submissive grin; a tense, still body with a hard stare points towards a genuine warning. When in doubt, especially with an unfamiliar dog, treating any teeth display cautiously and avoiding sudden movement or continued approach is the safer default, since misreading an aggressive snarl as a friendly grin is a common and sometimes costly mistake.

How to respond to a submissive grin

If a dog offers a genuine submissive grin, the best response is calm acknowledgement rather than a big, excited reaction, since a soothing tone and gentle praise reinforce the dog's sense that everything is fine without adding further excitement to an already slightly nervous moment. It's worth avoiding sudden movements or a loud, delighted response even when the grin looks endearing, since an over-the-top reaction can tip a mildly nervous dog into more obvious stress rather than settling them.

Article content © Ravi Teja. All rights reserved.

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