Osteoarthritis affects around one in five adult dogs and the majority of dogs over eight. It is progressive, it is painful, and it is very often missed for years — because dogs do not complain, and because the early signs look like ageing.
“He’s just slowing down” is the single most costly sentence in dog ownership.
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The early signs
Limping is a late sign. Before it appears, watch for:
- Stiffness after rest that eases with movement, especially first thing in the morning or after a long nap
- Reluctance to jump into the car, onto the sofa, or up steps — or hesitating before doing it
- A changed sit. A dog who sits with one leg kicked out to the side, or who lowers slowly
- Difficulty getting up, particularly on a slippery floor
- Less interest in walks, or lagging behind on the way home
- More circling before lying down, or long pauses before committing
- Licking one joint repeatedly
- Behaviour changes — grumpiness when touched, less tolerance of the other dog, less play, more sleeping
- Muscle loss over the hindquarters or shoulders, which is easiest to spot as asymmetry
Take video of your dog walking away from you and towards you, on a hard flat surface. Patterns are much clearer on a screen than in a corridor.
What causes it
Developmental problems — hip dysplasia, elbow dysplasia, luxating patella, OCD — set the joint up for early arthritis, often before the dog is two.
Injury — cruciate ligament rupture is the big one, and arthritis in that knee is essentially guaranteed afterwards.
Conformation and size. Large and giant breeds carry more load; some breeds have specific vulnerabilities.
Body weight. The single largest modifiable factor.
Age. Cartilage wear accumulates.
The interventions that matter most
Weight control
Nothing else comes close. Fat tissue is not inert — it produces inflammatory signalling molecules that actively worsen joint disease — and every extra kilo multiplies the load through the joint.
The Labrador lifetime study is the key evidence here: dogs kept at a lean body condition developed arthritis later, had lower severity, and lived roughly two years longer than their littermates fed 25 percent more.
If your dog is arthritic and overweight, weight loss is the most effective treatment available, and it is free.
Appropriate exercise
The old advice to rest an arthritic dog was wrong. Cartilage has no blood supply and depends on movement to circulate joint fluid, and muscle is what stabilises a bad joint.
- Little and often. Three or four twenty-minute walks beat one two-hour walk
- Consistent. A sedentary week then a hiking weekend is the worst pattern
- On soft, even ground where possible
- Avoid hard ball-chasing, sharp turns, jumping in and out of cars, and slippery floors
- Swimming and hydrotherapy are excellent, being non-weight-bearing while building muscle
Pain medication
This is where the biggest quality-of-life gains usually come from, and where owners are most hesitant.
Veterinary NSAIDs are the mainstay and are effective. They need veterinary supervision — blood tests before and during, and awareness of gut and kidney effects — but for most dogs the benefit substantially outweighs the risk.
Newer monoclonal antibody injections targeting nerve growth factor have changed the picture for many dogs, particularly those who cannot tolerate NSAIDs. Other options include gabapentin, amantadine and joint injections.
Never give human painkillers. Ibuprofen, naproxen, aspirin and paracetamol range from risky to lethal in dogs.
Environment
Cheap changes with a large effect:
- Non-slip runners on hard floors. Slipping is painful and frightening, and fear of slipping restricts movement further
- A firm orthopaedic bed. Soft beds are hard to get out of; memory foam supports joints
- Ramps for the car and the sofa
- Raised food and water bowls for dogs with neck or elbow pain
- Keep them warm. Cold, damp weather genuinely worsens stiffness
Bedsure Orthopedic Dog Bed
An egg-crate foam orthopaedic bed with a washable cover. The things to check on any joint bed: firm enough not to bottom out under your dog’s weight, and a low enough entry that a stiff dog can step in rather than climb.
Supplements
Omega-3 fatty acids have the best evidence of any supplement for canine arthritis — several controlled trials show improved weight-bearing, and some dogs reduce their NSAID dose under veterinary guidance. The effective dose is high; check the EPA and DHA content rather than the total oil.
Glucosamine and chondroitin show mixed results in trials. They are very safe and may help some dogs modestly. Give any joint supplement eight weeks before judging it.
Nutramax Cosequin DS Joint Health Supplement
One of the few joint supplements with published research on the specific formulation and a manufacturer that runs its own quality testing. Chewable, which makes daily dosing straightforward.
Physiotherapy
Underused and genuinely valuable. A qualified veterinary physiotherapist can build a targeted programme, and the home exercises — controlled weight-shifting, cavaletti poles, sit-to-stand repetitions — build the muscle that protects the joint.
What does not work
- Rest as a long-term strategy
- Waiting until the dog is obviously limping
- Human painkillers
- Supplements alone, in place of weight control and pain relief
- Assuming a quiet old dog is comfortable
The test that tells you the truth
If you are unsure whether your dog is in pain, ask your vet about a trial of pain medication for two to four weeks. Owners routinely report that a dog they thought was simply old started playing again, went upstairs again, or greeted them at the door again.
That response is the diagnosis. And it is the thing most worth finding out.
