When stiffness becomes arthritis: the signs owners miss

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The short answer

Stiffness that shows up when your dog gets up after resting, a new reluctance to climb stairs or jump, slower walks, and changes in weight or posture are the signs vets list for osteoarthritis. Several veterinary sources say owners should not write them off as normal aging, because catching arthritis early gives your vet more options for controlling pain and keeping muscle and movement. We are not able to diagnose anything from a list: only an exam can say whether stiffness is arthritis, and which joints.

The signs, in the sources' own terms

VCA Animal Hospitals lists five: stiffness, limping or difficulty getting up and down; reluctance to go up or down steps or to jump on and off furniture; slowing down on walks or reluctance to play; weight gain, with or without loss of muscle mass; and changes in posture (VCA). Cornell adds pain, a change in gait, muscle wasting and behavior changes such as irritability (Cornell). A veterinary education programme hosted by the World Small Animal Veterinary Association lists stiffness after exercise or rest, reluctance to climb stairs or jump, behavior changes such as aggression or lethargy, and slowing on walks (WSAVA-hosted Xpertise brochure, sponsored by Vetoquinol).

The sources describe stiffness mostly "after rest" or when rising, which is why the morning is the obvious time to watch. VCA does not name mornings specifically.

Who is more likely to get it

A study of 455,557 dogs in UK vet practices found that 2.5 percent had osteoarthritis recorded in 2013, with an average age of 10.5 years at first diagnosis (Royal Veterinary College). Records are not the same as true prevalence, and this is UK data. The same study found higher odds in several breeds, with Rottweilers highest (odds ratio 3.1) followed by Dogue de Bordeaux and Old English Sheepdogs (both 2.8), and 2.3 times the odds for dogs above average weight. That does not mean a small, young or lean dog is safe: it means the owner of a heavy 10-year-old Rottweiler has more reason to watch than average.

A week of notes

Picture an owner of a nine-year-old Labrador who writes four lines each evening for a week (illustrative): how he got up this morning, whether he hesitated at the stairs, how far the walk went, anything different. By Friday there are two entries saying "slow to rise" and one saying "stopped halfway on the usual walk". VCA suggests recording videos of the behavior at home because they help the vet. Dated notes and a short clip of him getting up and walking on a hard floor give the vet what a short exam may not show.

Owner questionnaires also exist: the Liverpool Osteoarthritis in Dogs (LOAD) questionnaire is available as a printable form from the Morris Animal Foundation. We could not check how it is scored, so treat it as something to bring to your vet rather than a test.

When to book

Do not wait for a perfect picture. Our rule of thumb, not a sourced threshold: book an exam if you notice one of the signs above and it does not settle in a day or two, if it is getting more frequent, or if your dog's walks, play or willingness to use the stairs have changed. Sudden severe lameness, crying out, or a dog who will not put weight on a leg is not a wait-and-see situation; call your vet the same day. If you already have a diagnosis, the first and second pages in this cluster cover supplements and ramps.

Worth knowing

The reason these signs get missed is that they arrive slowly, and each looks like a quirk. A dog who skips the sofa because he "is not bothered any more", a retriever who stops bringing the ball back, a dog who lags behind on the walk: the owner adapts a little each time. Two things can make it harder to see, and these are our observations, not findings: a dog can look fine for the few minutes he is in the exam room, and weight gain, one of VCA's five signs, can be both a cause and a result of the problem, since Cornell says excess weight speeds arthritis along and a sore dog tends to move less. So the most useful thing you can do is make the slow change visible: dated notes, a short video every month on the same floor, and his weight on the same scale. Then ask the vet to compare. If you are comparing policies, remember that early notes in the record can matter to an insurer, which is covered on the insurance page of this cluster.

Last researched October 6, 2026. The prevalence figures are UK data from 2013; the WSAVA-hosted brochure is sponsored by a manufacturer, so we use it only for the list of signs.

General information, not veterinary advice. Talk to your vet before changing your pet's treatment, diet or medication.