Could Your Dog's Behaviour Be a Sign of Pain?
October 12, 2026
Pain doesn't always look like pain. Here's why your dog's behaviour might be telling you something important.
When your dog barks and lunges on walks, struggles to settle, or snaps when touched, it's natural to think you have a training problem.
But what if your dog isn't just struggling behaviourally? What if they're struggling physically, too?
Pain and behaviour are closely connected. In fact, one published review suggests pain may be involved in up to 80% of behaviour cases. That's an estimate, not a confirmed rate across all dogs, but it highlights how important physical comfort can be.
In my own work, nearly every dog I see has something else going on that's worth investigating.
That's why understanding how your dog feels in their body is the first step in my behaviour plans.
Pain doesn't always look like pain
We tend to picture a dog in pain as one who's limping, crying, or refusing to move.
But uncomfortable dogs can still run, jump, chase balls, play, and get excited for walks.
We do the same thing! Think about how often we go about our day with headaches, stomach aches, or sore backs.
Our dogs don't necessarily stop doing what they love because they're uncomfortable. But there are often clues.
Watch for:
Reactivity, frustration, or fear on walks
Sensitivity to touch or handling
Trouble settling or sleeping
Increased anxiety, clinginess, or restlessness
Changes in sitting, standing, walking, or lying down
Less tolerance for people or other dogs
Hesitating before jumping or using stairs
Suddenly struggling with familiar activities
These signs don't automatically mean your dog is painful, but they're good reasons to investigate.
How does pain affect behaviour?
Think about how you feel when you have a headache, sore back, or haven't slept well. You're probably less patient, more easily frustrated, and have a harder time concentrating.
Our dogs aren't so different.
Pain can lower a dog's ability to cope with everyday stress, making situations that were already challenging feel even harder.
It can affect behaviour in so (!) many different ways:
Lower tolerance: More frustration, irritability, or overwhelm.
Increased reactivity: More barking, lunging, growling, or snapping.
More fear and anxiety: Feeling worried, less confident, or more sensitive to their surroundings.
Sensitivity to noises: Hyper-vigilience, excessive barking, or extreme fear around any noise
Poor sleep: Restlessness and difficulty getting comfortable.
Difficulty learning: Less focus and trouble responding to cues or learning new skills.
Touch sensitivity: Avoiding handling or reacting when touched.
Social changes: Avoiding other dogs or people, or seeking more reassurance.
Activity changes: Avoiding certain movements, playing less, or becoming unusually restless.
When your dog doesn't feel good physically, it's harder for them to feel good behaviourally.
What happens when we address the discomfort?
Sometimes, the changes are pretty remarkable.
Here are four dogs I've worked with whose behaviour made more sense once we looked at how they were feeling physically:
A dog with spinal pain would snap and bite when petted, even when she seemed to want affection. Touch may have hurt. Once her pain was better managed with medication and changes at home, the snapping dropped dramatically.
A dog with undiagnosed worms growled and bit when people approached her belongings. Feeling sick may have lowered her tolerance. Once the worms were treated (poor girl!), she could make much better progress with her resource guarding training.
A dog with stomach issues struggled to stay home alone. Feeling unwell may have made being away from her safe people harder. Once her digestive problems were addressed, she could comfortably spend hours alone.
A dog with a knee problem barked and lunged at her doggy brother when he came near. She may have worried about him bumping her sore leg. With pain medication and rehabilitation, her tolerance improved quickly.
What does this mean for you and your dog?
If your dog is barking, lunging, guarding things, struggling to be alone, or reacting to touch, don't assume it's just a training problem.
Discomfort might be making those behaviours harder to manage. And if we miss that piece, we could spend a lot of time training without getting very far.
Addressing physical comfort can make life easier for your dog and training more effective, too.
Pain is more than just a physical problem
The biopsychosocial model of pain is a fancy name for a simple idea: pain is influenced by more than what's happening in the body.
Three connected pieces affect how pain is experienced:
Biological: Physical health, injury, inflammation, and the nervous system.
Psychological: Stress, fear, anxiety, and past experiences.
Social and environmental: Relationships, routines, surroundings, and everyday life.
For example, a dog with sore joints might worry about other dogs bumping into them. That worry increases stress, which can make pain harder to cope with. Eventually, they may start barking or lunging to keep other dogs away.
Pain can increase stress and anxiety, while stress and anxiety can make pain feel worse.
The good news is that we have a lot of ways to address our dog’s pain at home: helping them have positive experiences, reducing their stress, and making small tweaks to the environment can make a huge difference.
But my vet said my dog is healthy!
Veterinary exams are an important part of investigating pain, but a normal exam doesn't necessarily mean your dog is pain-free.
Here's why:
Dogs can't tell us what hurts. The only thing we have to go on is their behaviour.
Pain isn't always obvious. Dogs can still run, jump, and play while uncomfortable.
Pain can come and go. Your dog might seem fine at the appointment but struggle later.
The vet clinic isn't everyday life. Stress or excitement can change how dogs move and respond.
X-rays don't show everything. Some soft tissue and nerve-related problems won't be visible.
Physical exams have limitations. Some problems are difficult to identify during a short appointment.
Pain is individual. Dogs with the same condition can experience very different levels of discomfort.
A normal exam is useful information, but it can't rule out every possible source of pain.
That's why movement videos, behaviour changes, health history, and everyday observations are so valuable alongside veterinary care.
Why I look at movement as part of behaviour work
When I work with a dog, I want to understand more than their barking, lunging, or anxiety.
I also look at:
How they walk, sit, stand, and lie down
Whether getting up or moving seems difficult
Changes in posture or weight distribution
Movements or activities they avoid
Their comfort with touch and handling
Movement and behaviour together help us build a better picture of how a dog might be feeling.
This doesn't diagnose pain or replace veterinary care. It helps identify concerns worth exploring with your vet.
What should you do if you suspect pain?
Here are some practical next steps:
Take movement videos. Film walking, trotting, sitting, lying down, getting up, and using stairs.
Track behaviour. Look for patterns around exercise, time of day, touch, or certain activities.
Make home more comfortable. Add non-slip rugs, supportive resting spots, and reduce unnecessary jumping. Swap intense fetch for gentler enrichment.
Book a vet appointment. Share your concerns.
Ask about further investigation. Your vet may recommend additional testing, rehabilitation, or a pain management trial.
Revisit physical comfort if training stalls. Worsening behaviour or a lack of progress can be a reason to look more closely.
You don't need to know what's wrong before asking for help. Your everyday observations can provide important clues.
Better behaviour starts with feeling better
Good behaviour support starts with understanding the whole dog.
That means looking at health, comfort, sleep, stress, movement, and everyday life—not just the behaviour we'd like to change.
When dogs feel better in their bodies, they often have more capacity to learn, cope, and enjoy life.
Wondering if discomfort might be affecting your dog's behaviour?
At Little Weirdos, my approach is pain-aware and wellness-focused from day one.
I'll help you look at the bigger picture so we can figure out why your dog is struggling and what they need to feel better.