You recognize dog side eye, right? It’s when they keep their head in a fixed position but move their eyes to check out something or someone. This creates that classic skeptical, judgmental look.
And although it looks humorous, there are some important cues to note when determining why our dogs do it.
Stress, Anxiety, or Discomfort
When dogs give the side eye (or show more of the whites in their eye) due to stress it’s often referred to as whale eye. Direct eye contact can feel threatening to dogs (it’s rude and confrontational in dog to dog communication, so turning their head while still monitoring avoids escalation while signaling unease.
This often happens when they’re feeling pressured and uneasy, like during grooming, nail trims, vet visits, being hugged too tightly, or when personal space is invaded. It can be an early warning sign before a growl, snap, or avoidance.
Other stress signals to watch for alongside the side eye include stiff body, tucked tail, lip licking, yawning, or panting.
Resource Guarding
Does your dog growl to keep you away from their food and/or toys? If so it’s called resource guarding, and many dogs exhibit the side eye when they don’t want to share something.
Dogs can side eye when protecting something valuable, like food, a toy, a bone, or even their favorite spot on the couch. It’s their way of saying “I’m watching you, back off” without direct confrontation.
Tip: If your dog does have resource guarding check out these 5 tips on reducing the behavior.
Curiosity, Wariness, or Mild Irritation
Sometimes the dog side eye really is pretty harmless, just an indication that they’re curious about something going on around them. My dog always does it when he’s on the couch with his head rested on the pillow; he is far too comfortable to move his head to see what’s going on.
If your dog gives the side eye while in a comfortable position they might be intrigued by something like a new noise or object, but not nervous enough to commit fully. They’re just casually keeping an eye on the situation.
It can also signal mild annoyance or “I’m not thrilled about this” (when you’re interrupting their nap or taking away a fun item). In playful contexts, it might just your dog being extra cheeky.
via papu
Natural Communication
In dog greetings approaching sideways and avoiding direct eye contact helps say “I’m not a threat.” Some dogs extend this to humans and might glance at you from the side rather than straight on.
Certain breeds with prominent or bulging eyes (like brachycephalic breeds with flat faces such as the Bulldog) show more visible whites naturally, making the side eye more obvious.
Evolution wise, dogs developed more visible in their eyes than most mammals, likely because humans selected them for expressive faces that aided in communication during domestication. This makes their “side eye” especially noticeable to us.
How to Respond
When it comes to how to respond to your dogs side eye you need to read their full body language. A relaxed tail wag and loose posture might mean playful curiosity. Stiffness or freezing suggests real discomfort and it’s time to give them some space or remove them from the stressful situation.
Never punish your dog’s side eye; it’s communication, not defiance. They’re trying to communicate with you, and the last thing you want is to make them even more uncomfortable giving cues. If your dog wasn’t able to show you they’re uncomfortable they’d just bite without warning. Work on solving the underlying issue, not punishing the communication.
If your dog is doing it out of fear or anxiety, remove the stressor and work on de-escalating the situation. If it’s frequent or paired with other concerning signs such as aggression or hiding, consult a vet or certified behaviorist to rule out pain, illness, or anxiety issues.
In short, your dog’s side eye is usually caused by stress or curiosity; reading their body language for context will give you the full story.
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