Ask an owner how they would know their dog was in pain and most will describe a limp. It is the signal everyone watches for, and it is the reason so much canine joint pain goes unnoticed for years. A limp is what a dog produces when it has run out of other options. Long before that, it has been quietly rearranging how it moves, sits, sleeps and behaves, and almost none of those adjustments look like pain to a human observer.
What they look like instead is character, or age. The dog that has become choosy about the stairs is stubborn. The dog hanging back on the way home is lazy. The dog that grumbles when its collar goes on is turning grumpy in old age. Each reading is available, comfortable and frequently wrong.
Limping is the end of the story, and what dogs do instead
A limp appears when a dog cannot bear normal weight through a limb, which means the joint has usually passed through a long period of lower-grade discomfort first. Force plate and pressure mat studies, which measure how much weight each limb carries through a stride, routinely detect asymmetry in dogs that experienced observers, including vets, judge sound on visual examination. The gait analysis sees it. The eye does not.
Chronic and acute also differ. Sudden lameness after a jump is obvious because the change is abrupt. Osteoarthritis erodes function slowly and often symmetrically, and a dog with both hips or both elbows affected has no good leg to favour. It does not limp because it has nothing to limp towards.
Owners who begin to suspect something often reach for a supplement before they reach for an appointment, and although Joint and Bone Dog Treats and products of that kind are formulated to support joint health and normal mobility alongside a balanced diet, they belong to the food category and not the medicine cabinet. A dog already showing signs needs an examination, not a change of snack.
Watch a dog with sore hips walk on a hard surface and the compensations become visible once you know them. Weight shifts forwards, which over months produces a front-heavy dog with well-muscled shoulders and a narrow, wasted rear end. Stride length shortens. The head nods, dropping as the sound limb takes weight. Some dogs bunny-hop at canter, moving both hind legs together to spread load across two joints.
Muscle asymmetry is one of the most reliable early findings, and an owner can check it at home. Run both hands down either side of the spine and over the thighs. A pronounced difference between left and right, or a rear end noticeably lighter than the front, says the dog has been unloading something.
The small refusals
Joint pain rarely announces itself. It negotiates. The pattern to watch for is a dog declining specific movements while apparently happy to do everything else.
- Hesitating at the top or bottom of the stairs, taking them one at a time, or going down sideways
- Waiting to be lifted into the car when it used to jump, or making a visible run-up first
- Getting onto the sofa in two stages, or abandoning a favourite raised bed
- Slowing on the second half of a walk while remaining keen at the start
- Approaching a slippery floor and stopping, or skating and scrabbling on laminate
- Standing to eat with front legs braced wide, or lying down to eat from the bowl
The second-half slowdown deserves attention because it is so easily blamed on fitness. A dog that sets off with enthusiasm and flags on the way home fits the pattern of a joint that becomes uncomfortable under sustained load. Lost fitness produces a dog slow from the outset. This one starts well and fades.
Stiffness that wears off, and why it misleads
Classic osteoarthritic stiffness is worst after rest and improves with movement. A dog rises slowly, walks stiffly for two or three minutes, then loosens into a near-normal gait. Owners see the improvement and conclude the problem cannot be serious.
The improvement is the diagnostic clue, not the reassurance. Warming up increases blood flow and alters the viscosity of the joint fluid, which is why the pattern is characteristic. The moment to watch a dog is the first thirty seconds after a long sleep, not during a walk. Cold weather makes it more pronounced, which is why owners so often raise it in January.
Changed postures: the sit, the lie and the stand
A comfortable dog sits square, both hind legs folded neatly under the body with the hocks tucked in. Painful stifles or hips make that hard to hold, so the dog swings one leg out to the side. The result is often called a lazy sit, and in an adult dog that previously sat square it is one of the most useful signs available.
Lying down and getting up are equally informative. Watch for a dog that lowers itself in stages, drops the last few inches, or circles unusually long before committing, and for the reverse: pushing up with the front end and dragging the rear. Difficulty settling is a subtler version. A dog that shifts position through the evening, gets up, resettles and repeats is saying that no position stays comfortable for long.
Licking, grooming and the parts of the coat that change
Dogs lick over painful joints. The result is a patch of coat over a carpus, hock, elbow or stifle that is damp, thinned, or stained rusty brown by porphyrins in saliva, especially visible on pale coats. It is easy to mistake for an allergy, and sometimes it is. Licking focused precisely over a joint is worth raising with a vet rather than treating as a skin problem.
Grooming changes in the other direction too. A dog that can no longer reach its hindquarters or tail base may develop a scurfy, matted patch there, because the twisting has become uncomfortable. A coat that has deteriorated only where the dog must bend to reach is a mechanical finding, not a dermatological one.
The behavioural signs everyone attributes to ageing
Chronic pain is exhausting and it changes temperament. Its behavioural presentation is frequently mistaken for cognitive decline, for a dog becoming antisocial, or simply for a dog getting old.
- New irritability, especially towards other dogs, children or anyone who approaches from behind
- Growling or moving away when lifted, harnessed, groomed or touched over the hindquarters
- Withdrawal: choosing to lie in another room, less interest in greeting, less interest in play
- Reduced tolerance of handling at the vet or groomer, where the dog was previously easy
- Restlessness at night, panting when at rest, or waking and repositioning repeatedly
- Reluctance to be approached in the bed, which is often the last comfortable place
A dog in persistent discomfort has a lower threshold for everything else. Behaviourists working with sudden-onset aggression in adult dogs rule pain out first, because a meaningful proportion of cases have an orthopaedic component underneath. A snappy dog has not developed a character flaw at nine years old.
Why owners consistently under-report pain in their own dogs
This is not carelessness, and it applies to everyone. Two things work against accurate reporting.
The first is gradual change. Deterioration over eighteen months is invisible to someone seeing the dog daily, in the same way nobody notices their own child growing. The comparison point drifts. Owners who watch old video are often startled, and the change frequently becomes obvious only after treatment begins and the dog returns to its old self.
The second is the caregiver placebo effect, well documented in veterinary trials. In blinded studies of canine osteoarthritis, a substantial proportion of owners report clear improvement in dogs given an inactive placebo, and vets assessing the same dogs report improvement too, though less often. The consequence is real: owner impressions are unreliable without objective measures, which goes a long way towards explaining why the evidence base for joint supplements in dogs remains genuinely mixed rather than settled.
Two tools that make the invisible measurable
The first is a phone camera, and it is free. Film thirty seconds of the dog walking directly away from the camera and back on a hard non-slip surface, then film it rising after a long sleep. Do it every few months and keep the files dated. Slow-motion playback exposes head nod and stride asymmetry that full-speed viewing hides. Bring the videos to the consultation, because dogs are notorious for looking sound in a strange room.
The second is a clinical metrology instrument: a validated owner-completed questionnaire, tested specifically for dogs, that converts observations of everyday activities into a score trackable over time. The Liverpool Osteoarthritis in Dogs questionnaire and the Canine Brief Pain Inventory are both used in UK practice. They ask concrete, answerable questions about specific activities rather than inviting a general impression, and because the questions repeat at each visit they detect drift that memory cannot.
When to speak to your vet
Book an appointment rather than waiting and watching if any of the following apply.
- Any lameness that persists beyond forty-eight hours, or that keeps coming back
- A dog that has stopped doing something it used to do easily: stairs, the car, the sofa, a favourite walk
- A change in the sit, or difficulty rising, in a dog of any age
- New irritability, growling when handled, or withdrawal from company
- Panting at rest, restlessness at night, or an inability to settle
- Visible muscle loss over one side, or a rear end that has become noticeably lighter
- Persistent licking over a specific joint
Sudden non-weight-bearing lameness, a hot or swollen joint, a dog that cries out when touched, or a dog unable to stand all warrant same-day attention, as does any acute change after a fall.
Where pain is present, veterinary treatment is the answer. Diagnosis, imaging, prescription pain relief and a structured plan sit with a veterinary surgeon, and nothing bought over a counter substitutes for them. A supplement may form part of a plan a vet is happy with. It is never the plan.
Building a record worth having
The most valuable thing an owner brings to a consultation is specificity. Not that the dog seems slower, but that it stopped jumping into the boot in March, has taken the stairs one at a time since May, and now needs five minutes to loosen up in the mornings rather than one.
Keep a short dated note whenever something changes. Photograph the dog standing square from behind every couple of months, so muscle loss becomes comparable rather than remembered. Weigh it and keep it lean, since excess weight loads every joint on every stride and weight management carries among the strongest evidence of anything an owner controls. Check the floors: a dog skating on laminate is bracing constantly.
Above all, treat “he is just getting old” as a hypothesis rather than a conclusion. Age is not a diagnosis, and dogs do not slow down because a number changed. Something specific is usually making movement less appealing, and the earlier it is found, the more comfortable years remain to protect.
