You might think a gorilla’s smile means what yours does, but honestly, things get weird in the wild. Gorillas have a whole range of facial expressions—some show they’re being playful or maybe feeling submissive, while others? Well, they’re warning you to back off.
When a gorilla bares its teeth, that can signal aggression or a threat. But if you see an open, toothless play face, the gorilla probably feels relaxed or wants to play.
If you want to really get gorilla behavior, you need to spot these subtle differences. It can help you stay safe and maybe even connect a little with their world.
Let’s look at how gorillas use their faces, what signs actually matter, and how you should act around them so things don’t get awkward.
What Does Smiling Mean to Gorillas?
Gorilla facial signals are pretty specific and always depend on the situation. Sometimes, two expressions look similar but mean totally different things—like play, submission, or even a threat.
You’ll have to pay attention to the face, the body, and what’s going on around them.
Understanding Gorilla Facial Expressions
Gorillas use their faces to show what they feel or plan to do. When you see a relaxed open-mouth face, that usually means play or friendliness.
You’ll notice this during their rough-and-tumble games, when they gently mouth each other and their eyes look soft.
Researchers studying western lowland gorillas found several main expressions—like play face, pout, and alert face. The whole body matters: if a gorilla bounces around with a play face, it’s probably just having fun.
But if you see the same mouth shape and the gorilla’s body looks stiff, that’s a sign of stress. Gorillas don’t fake these signals; they happen quickly and without thinking, so you get a real-time clue about how the gorilla feels.
Play Face Versus Bared-Teeth Displays
Both a play face and a bared-teeth display can show teeth, but they’re not the same. The play face has a relaxed jaw and an open mouth, and you’ll see it when gorillas want to play.
Look for loose, wiggly movements and repeated play gestures.
A bared-teeth display shows more gums and lips pulled way back. Depending on what’s happening, this can mean “I give up” or “Back off.”
Sometimes, if you see teeth with tense eyes and a gorilla leaning forward, that’s a warning. Researchers studying chimps and gorillas say you really need to look at posture, sounds, and gestures to know what a teeth display means.
How Gorillas Use Human-Like Facial Expressions
Gorillas can make faces that look a lot like ours, but the meaning? It’s not always the same.
When a gorilla “smiles” by lifting the corners of its mouth, it could be a submissive bared-teeth display or just a play face—not happiness like we’d think.
Don’t just assume you know what it means.
If you read primatology papers or spend time watching western lowland gorillas, you’ll see that researchers compare ape faces to figure out where the human smile comes from.
Evolution shaped similar movements for different reasons. So when a gorilla’s face looks familiar, check out the gestures, body tension, and who else is around to really understand it.
Here’s a good read: a study on gorilla facial categories at the Bronx Zoo breaks down play face and bared-teeth displays, plus how they go with gestures (link).
Interpreting Smiles and Safe Human Interaction
Gorilla facial displays almost never mean what a human smile does. They’ll use their teeth, yawns, and open mouths to show submission, stress, or play.
So if you’re around gorillas, you really need to keep your actions calm and clear.
Why Smiling at a Gorilla Can Be Misinterpreted
A human smile usually means you’re being friendly, right? But when a gorilla shows its teeth, it might actually be feeling anxious or showing submission.
Male gorillas sometimes yawn and flash their teeth when they’re stressed or about to show dominance.
Young gorillas use an open “play face” without teeth when they play, and that looks different from the more serious adult bared-teeth displays.
If you smile at a wild gorilla, it might think you’re challenging it or feeling tense. That can stress the animal out and make it act defensively.
So, keep your face neutral, don’t stare for too long, and always listen to your guide or ranger if you’re trekking.
Guidelines for Interacting with Gorillas
Here’s how you can reduce risk and show respect:
- Stay at the distance your guide says (usually a few meters).
- Move slowly and speak softly, keeping your voice low.
- Keep your hands visible and don’t make sudden moves or reach toward the gorilla.
- Skip the feeding, touching, or risky selfies that bring you closer.
- If a gorilla stares at you, turn your body a bit to the side and lower your gaze.
If a gorilla walks up to you, just freeze and wait for your guide to tell you what to do. Guides know how to read gorilla body language and will tell you if you should back away or stay put.
That way, you’re much less likely to misread signals like teeth-baring or chest beating.
What to Do If a Gorilla Grabs You
So, a gorilla grabs you—yeah, that’s terrifying. First, try your best to stay calm. I know, easier said than done.
Don’t scream or yank yourself away; sudden moves just make things worse. Keep your limbs relaxed. Seriously, just go limp.
Avoid looking the gorilla in the eye. That can come off as a challenge, and you really don’t want that.
Protect your head as much as you can. Wait it out and let the gorilla decide when to let go.
If you can, quietly signal your guide. Guides know what they’re doing and will step in with careful, practiced actions.
Don’t try to snatch anything back if the gorilla’s holding something. Let it have whatever it wants.
Once the gorilla lets go, listen to your guide and move slowly to somewhere safer.
If you end up with scratches or bites, get medical help right away.
Curious about gorilla facial expressions? There’s some fascinating research out there on how their play faces and teeth-baring signals work, both in the wild and in captivity.
