What Your Dog’s Mouth Is Really Saying
Your dog’s mouth can tell you a lot about how they’re feeling, from chilled and happy to anxious or even angry and threatening. Don’t ever just concentrate on the mouth alone though. To really understand what’s going on, take in the full picture: tail position, ear movement, posture, and any sounds they’re making. They are all part of their silent language.
Chatty or Quiet?
Many dogs make very little noise whilst others make a lot.
Growling, for example, isn’t always a sign of worry—it can be part of play. However, if it’s paired with stiff body language, wide eyes, a still tail, or ears pinned back, your dog might be feeling a bit uneasy. That’s your cue to step in and help them out.
Here’s a thought to consider. If you constantly tell your dog off for growling, they may stop doing it altogether. This may not be as good as it sounds because it doesn’t change the way they feel, it just stops them letting you know about it. Growling is often a polite warning, and without it, they might skip straight to snapping or biting. So let them use their voice—it’s part of healthy communication.
Barking and Whining
Dogs bark for all sorts of reasons—some seem to just love the sound of their own voice and it can become a habit. They might be excited, anxious, surprised, or trying to get your attention. Many bark when someone walks past the house or knocks on the door. It’s often their way of saying, “Something’s happening, come and see!” If you’re curious about managing barking, I’ve written more about it in my blog How can I stop my dog from barking.
Whining can mean your dog’s feeling stressed, but it might also be pure excitement. Again, check the rest of their body language to get the full story.
Relaxed vs. Worried
A relaxed dog often has a soft, slightly open mouth with their tongue hanging out. If the mouth closes, they might be processing something that’s made them a little unsure. If they’re standing calmly but with a closed mouth, try a gentle prompt to help them disengage.
If their lips start to tighten, they begin licking or panting (when it’s not hot), it’s a sign of stress creeping in. Watch for wrinkles around the mouth or lips pulled back—these are signs they’re not feeling relaxed. If it escalates to teeth showing and a wrinkled muzzle, it’s time to step in and help them move away.
Nervous Nipping
People often think growling dogs are the ones to be wary of, but silent, nervous dogs can be just as likely to bite—sometimes more so. Lip licking, lip lifting, showing teeth, pinned ears, intense staring… these are all signs of discomfort. If your dog feels trapped, a nip might be their only way out. So, if you spot a tight mouth and pursed lips, take it seriously, don’t tell them off but help them to feel safe.
Sometimes dogs pull their lips back and show their teeth with an open mouth—not to be scary, but to cool down or because they’re unsure. If they’re panting and it’s not warm, have a look around for anything that might be bothering them.
Lip licking isn’t always a sign of aggression—it’s often a calming signal, like saying “I mean no harm.” You might even see it paired with a shake-off, which is another way dogs try to reset themselves.
Be Your Dog’s Champion
And finally, never approach a dog you don’t know without checking with their owner first. Even friendly, submissive dogs can be wary—especially around children. Ask questions, be respectful, and always advocate for your dog. When they know you’ve got their back, they’ll feel more relaxed and ready to enjoy life to the full.
