Signs of Arthritis in Dogs & Natural Joint Support Options

By Sarah Bennett, Certified Animal Nutritionist — June 25, 2026

Arthritis — more precisely, osteoarthritis (OA) — is one of the most common and most underdiagnosed conditions in companion dogs. Because dogs are instinctively stoic about pain and because the disease progresses gradually, many owners don't recognise the signs until the condition is already significantly advanced. The good news is that early recognition, combined with the right combination of conventional care and evidence-supported natural interventions, can make a profound difference to a dog's comfort and quality of life.

This guide covers how to spot the warning signs, what diagnosis looks like, what conventional treatment involves, and which natural support options have the strongest evidence behind them.

Recognising the Signs of Arthritis in Dogs

Unlike in humans, dogs cannot tell you that their joints hurt. What they show instead are behavioural and physical changes that owners often attribute to "just getting older." While age is indeed a risk factor, pain is not an inevitable or acceptable part of ageing — and recognising these signs early matters.

Limping and Altered Gait

The most obvious sign of joint pain is a limp, particularly one that is more pronounced after rest and improves slightly with gentle movement. You may notice your dog favouring one foreleg when getting up from a lying position, or a subtle swaying in the hips when walking. In dogs with bilateral hip arthritis, owners sometimes describe a "bunny hopping" gait when the dog runs, using both hind legs together to avoid loading the painful joints alternately.

Morning Stiffness

Dogs with arthritis are frequently stiff when they first wake up or after a long rest. You may notice your dog moving slowly and awkwardly for the first few minutes after rising, then gradually loosening up as they warm the joints through movement. This "warming up" pattern is a hallmark of inflammatory joint disease.

Reluctance to Climb Stairs or Jump

If your dog used to leap onto the sofa without a second thought and now hesitates, circles uncertainly, or refuses entirely, this is a meaningful red flag. Stairs become similarly challenging, particularly when descending. Dogs with elbow or shoulder arthritis may struggle to lower their heads to a floor-level bowl, leading owners to notice them eating less enthusiastically.

Behavioural Changes

Chronic pain changes personality. A dog who was previously tolerant of being handled may become snappy when touched around affected joints. You might notice reduced playfulness, withdrawal from family interactions, changes in sleep patterns (pain often worsens at night), or increased irritability. Some dogs become unusually clingy, seeking reassurance; others become more withdrawn.

Licking or Chewing at Joints

Dogs will often lick or chew at a joint that is painful or inflamed. Over time, this can lead to localised hair loss or skin irritation over the affected area, particularly over the carpus (wrist), elbow, or hock.

Muscle Atrophy

Because dogs with joint pain tend to offload weight from painful limbs, the muscles of the affected leg gradually weaken and shrink from disuse. You may notice one thigh or shoulder visibly smaller than the other. This muscle loss is best detected by running your hands symmetrically along both hindquarters.

Diagnosis: What to Expect at the Vet

If you notice any of the above signs, a veterinary examination is the essential first step. Your vet will conduct an orthopaedic evaluation, palpating each joint for swelling, crepitus (grinding), pain on flexion or extension, and range-of-motion limitations. X-rays (radiographs) are the standard diagnostic imaging tool: they can reveal joint space narrowing, osteophyte (bone spur) formation, and subchondral bone changes characteristic of OA.

In some cases, advanced imaging such as CT or MRI may be recommended, particularly for complex spinal or hip pathology. Blood panels help rule out underlying metabolic causes of joint inflammation and establish a baseline before starting long-term anti-inflammatory medication.

Conventional Treatment Options

Veterinary management of canine arthritis is multi-modal, meaning it combines several approaches for greater effect than any single treatment alone:

Natural Joint Support: What the Evidence Says

Glucosamine and Chondroitin

These glycosaminoglycans are the most widely used joint supplements in veterinary medicine. Glucosamine provides building blocks for cartilage synthesis, while chondroitin inhibits enzymes that break down cartilage matrix. A landmark study by Moreau et al. (2003) found significant improvements in ground-force data (an objective measure of limb loading) in arthritic dogs given glucosamine/chondroitin over a 70-day period. Results are typically seen at 6–8 weeks with consistent supplementation.

Omega-3 Fatty Acids (Fish Oil)

EPA and DHA from marine sources are among the best-evidenced natural interventions for canine joint health. These omega-3 fatty acids modulate the production of pro-inflammatory prostaglandins and cytokines, reducing the inflammatory cascade that drives cartilage degradation. A study in the Journal of the American Veterinary Medical Association demonstrated that dogs supplemented with fish oil showed significant improvement in weight bearing and overall scores compared to controls. Dosing should be guided by your vet, as therapeutic doses are considerably higher than typical supplement amounts.

CBD (Cannabidiol)

CBD has attracted considerable research interest for its potential role in pain and inflammation management. Early veterinary studies are encouraging: a 2018 Cornell University study published in Frontiers in Veterinary Science found that dogs receiving CBD oil showed significant improvements in pain scores and mobility compared to placebo. The proposed mechanisms include interaction with the endocannabinoid system's CB1 and CB2 receptors, which are present in joint tissue, and modulation of inflammatory cytokine activity.

It is essential to use a THC-free product specifically formulated for dogs, as THC is toxic to canines even in small amounts. Always consult your vet first before adding CBD to your dog's regimen, particularly if your dog is on other medications (CBD can affect the metabolism of certain drugs). One well-regarded THC-free option formulated specifically for pets is HolistaPet, which provides third-party lab testing and clear dosing guidance. View HolistaPet's THC-free CBD products for dogs here.

Green-Lipped Mussel (Perna canaliculus)

Sourced from New Zealand, green-lipped mussel provides a unique combination of omega-3 fatty acids (including ETA, rare in other sources), glycosaminoglycans, and antioxidants. Several controlled studies have shown modest but meaningful benefits in arthritic dogs, with a good safety profile and tolerability.

Supportive Care at Home

Beyond diet and supplements, home adjustments can significantly improve a arthritic dog's daily comfort: orthopedic memory foam beds reduce pressure on joints during rest; ramps replace stairs where possible; non-slip rugs on hard floors prevent painful slipping; and raised food and water bowls reduce strain on neck and shoulder joints. Gentle, consistent low-impact exercise (short leash walks rather than intense play) maintains muscle mass and joint mobility without flaring pain.

For joint supplement products and senior-appropriate food formulations to complement your dog's arthritis management plan, Zooplus stocks a comprehensive range of glucosamine, omega-3, and green-lipped mussel supplements from trusted brands. Browse joint support supplements at Zooplus.

References

1. Moreau M, et al. Effects of feeding a high omega-3 fatty acids diet in dogs with naturally occurring osteoarthritis. J Anim Physiol Anim Nutr. 2013;97(5):830-837. PMID: 22882340.
2. Gamble LJ, et al. Pharmacokinetics, safety, and clinical efficacy of cannabidiol treatment in osteoarthritic dogs. Front Vet Sci. 2018;5:165. PMID: 30083539.
3. Moreau M, et al. Clinical evaluation of a nutraceutical, carprofen and meloxicam for the treatment of dogs with osteoarthritis. Vet Rec. 2003;152(11):323-329. PMID: 12665140.