Is your dog's unwanted behaviour actually a cry for help?

Every week, dogs are labelled as aggressive, difficult, or reactive,

when the real answer is far simpler, and far sadder: they're in pain.

As someone who works with dogs and their behaviour every day, this is the issue I feel most passionately about. Because pain doesn't always look like pain, and when we miss it, we don't just fail to help our dogs — we can actually make things worse.

Dogs can't tell us they hurt

This sounds obvious, but it's worth sitting with for a moment. Your dog cannot point to where it hurts. They cannot tell you their hip aches when they lie down, or that their mouth throbs when they pick up a toy, or that their back twinges every time a child reaches over to stroke them.

What they can do is communicate through behaviour, and when that communication is misread — when "I'm in pain" gets translated as "he's unpredictable" or "she's gone funny in her old age" — those dogs often end up in rehoming situations, or worse.

What does pain look like in dogs?

This is where so many owners (and even professionals) are caught out. Pain in dogs is rarely dramatic. It doesn't always mean yelping, limping, or refusing to move. Chronic pain, in particular, can be almost invisible — dogs are wired to mask it. Showing vulnerability in the wild is dangerous, and that instinct hasn't gone anywhere.

Instead, pain often shows up as:

• Sudden or increased aggression, especially when touched, lifted, or approached while resting

• Snapping or growling that seems to come from nowhere

• Reluctance to jump, use stairs, or get in the car — often written off as "laziness"

• Grumpiness around children or other dogs — particularly when play gets boisterous

• Changes in sleep, restlessness at night, or difficulty settling

• Reduced enthusiasm for walks, games, or things they used to love

• Flinching, lip-licking, yawning, or turning away when certain areas are touched

• Changes in posture — a tucked tail, a roached back, a lowered head

None of these things scream "pain" on their own which is exactly why they get misattributed to personality, training history, or breed.

The most common culprits that get missed

Some of the most frequently overlooked sources of pain in dogs include:

Dental disease.  Studies suggest the majority of dogs over three have some degree of dental disease, much of it painful. Yet because dogs keep eating (they have to), owners rarely suspect their mouths. A dog who snaps when touched near the face, who drops food, or who becomes reluctant to chew may have significant oral pain.

Orthopaedic conditions. Hip dysplasia, elbow dysplasia, spondylosis, and cruciate issues — these can develop slowly over years. A dog who "used to be fine on walks" but is now reactive or snappy may simply be hurting more than they were before.

Spinal pain. This is massively underdiagnosed. A dog with back or neck pain may react badly to being stroked along the spine, to collars, to being lifted, or to children hugging them from above. They may seem aggressive. They may seem anxious. They are, in fact, in pain.

Gastrointestinal pain. Nausea, gut discomfort, and digestive issues can make any dog miserable and short-tempered — and are rarely considered in a behaviour assessment.

Ear or skin conditions. Chronic itching and discomfort are wearing. A dog who has been uncomfortable for months or years will have a shorter fuse.

Why is this so often missed?

Partly, it's because the link between pain and behaviour isn't widely enough understood — even now, even among professionals. Behaviour problems are often assessed and addressed without a thorough veterinary check first. Training programmes are put in place. Management strategies are recommended. All while the dog continues to hurt.

Partly, it's because dogs hide it so well. A dog seen briefly in a consultation room may show no obvious signs of pain. They may move normally on a short walk. They may even seem happy and engaged. And then they go home and snap at their owner for sitting next to them on the sofa — because their joints ache and they were just starting to feel comfortable.

And partly, it's because we project. We expect pain to look a certain way. We think our dog would tell us if something was really wrong.

They are telling us. We just need to learn to listen differently.

The bottom line

Behaviour doesn't happen in a vacuum. Every dog who growls, snaps, shuts down, or reacts is communicating something. Our job — as owners, as behaviourists, as vets, as a community — is to ask why before we ask how to stop it.

So often, the answer is pain. A dog in pain doesn't need punishment, management, or a label. They need relief.

Let's give it to them.