Signs of Arthritis in Dogs: What to Look For and How to Help

The most common signs of arthritis in dogs are stiffness after rest, limping or favoring a leg, and reluctance to jump or climb stairs, often alongside subtler changes in behavior like irritability or increased licking at a joint. 

Arthritis is one of the most common conditions affecting dogs, and it can meaningfully impact their mobility and overall quality of life. 

It's also not limited to senior dogs. Younger dogs can develop arthritis too, due to previous injuries, developmental joint problems, or other underlying factors.

The tricky part is that dogs don't always make pain obvious. Early changes in movement or behavior can be subtle enough to write off as "just getting older" or "having an off day," when they're actually the first signs of a developing joint problem. 

This guide walks through:

• Common signs of arthritis
• What's happening inside the joint
• What causes it
• How it's diagnosed
• Range of treatment options available

Recognizing these changes early gives you the chance to talk to your vet and put a management plan in place before the condition progresses further.

What Is Arthritis in Dogs?

Arthritis broadly refers to inflammation and degeneration affecting one or more joints. In dogs, the form most commonly discussed is osteoarthritis (OA), a degenerative condition where the cartilage cushioning a joint gradually breaks down over time.

Here's what tends to happen inside an arthritic joint: cartilage deteriorates, exposing more of the underlying bone. This triggers inflammation within the joint, which in turn causes pain and stiffness. As the joint becomes less comfortable to move, a dog naturally starts relying on it less, and mobility decreases as a result. Left unaddressed, this cycle tends to feed itself, with reduced movement contributing to further stiffness and muscle loss around the joint.

It's important to understand that arthritis is generally progressive. It can't simply be "cured," but its symptoms and impact on quality of life can often be effectively managed. Arthritis management is typically multimodal, meaning no single treatment is usually sufficient on its own; the best outcomes tend to come from combining several strategies together, which we'll cover later in this guide.

Arthritis can affect virtually any joint, including the:

• Hips
• Knees
• Elbows
• Shoulders
• Spine and other joints

What Are Common Signs of Arthritis in Dogs?

Recognizing the signs of arthritis is the first step toward getting your dog help. Watch for the following:

Stiffness, Especially After Rest

This is one of the most classic signs of arthritis, showing up as difficulty getting up after sleeping, noticeable stiffness first thing in the morning, or a dog needing a few minutes to "get moving" before walking normally. Some dogs also show stiffness after prolonged activity, once they've had a chance to sit still for a while afterward.

Limping or Favoring a Leg

Limping may be intermittent, showing up only after activity, or it may be persistent throughout the day. Your dog might favor one leg outright, while others simply shift their weight away from a painful joint without an obvious limp. 

It's worth noting that limping isn't specific to arthritis and can have several other causes, so persistent limping deserves a proper veterinary assessment rather than an assumption either way.

Reluctance to Walk, Run, or Play

This often looks like slowing down and lagging behind on walks, losing interest in fetch or other play they used to enjoy, resting more frequently during activity, or generally avoiding things they once did enthusiastically.

Difficulty Climbing Stairs or Jumping

Watch for hesitation before stairs, difficulty getting into the car, no longer jumping onto furniture, taking stairs more slowly than before, or avoiding jumping altogether.

Changes in How Your Dog Sits, Stands, or Lies Down

This can include difficulty lowering themselves into a resting position or rising back up, sitting in an unusual position (sometimes called "lazy sitting," where the hind legs extend out to the side rather than tucking underneath), or repositioning frequently because they can't seem to get comfortable.

Changes in Behavior or Mood

Arthritis pain can show up behaviorally as irritability, withdrawal, less interest in interacting with family members, increased sensitivity when touched, growling or snapping when a painful area is handled, or general restlessness.

Licking or Chewing at a Joint

Some dogs repeatedly lick or chew at a specific leg or joint, sometimes to the point of causing skin irritation. 

This isn't unique to arthritis, though, and can also occur due to skin conditions or other injuries, so it's one clue among several rather than a standalone diagnosis.

Reduced Stamina and Increased Sleeping

Dogs with arthritis often tire faster, take more frequent breaks during activity, sleep more overall, no longer keep pace on walks they used to handle easily, and avoid prolonged activity.

Muscle Loss, Especially Around the Hind Legs

As a dog relies less on a painful limb, reduced use can contribute to noticeable muscle loss over time, often making the hindquarters look visibly thinner or less defined than the rest of the body. That said, hind-leg weakness isn't synonymous with arthritis specifically, and any significant or sudden weakness deserves prompt veterinary assessment to rule out other causes.

For a broader look at how these symptoms present across different situations, our guide to common signs of joint pain in dogs offers additional context.

Early Signs of Arthritis in Dogs

Because arthritis develops gradually, the earliest signs can be genuinely subtle, easy to attribute to a dog simply "slowing down with age" rather than recognizing them as the start of a joint condition. Watch for:

• Slight stiffness after resting
• Taking longer to stand up
• Slowing down on walks
• Hesitating before stairs
• Less enthusiasm for jumping
• Taking longer to get into the car
• Subtle changes in gait
• Becoming less playful
• Mild changes in temperament
• Licking at a particular joint
• Gradual loss of muscle

Here's a useful rule of thumb: don't wait for your dog to develop an obvious limp before bringing up mobility changes with your veterinarian. Catching these subtler signs early gives you and your vet a much better window to slow the condition's progression, compared to waiting until symptoms are impossible to miss.

Signs of Arthritis in a Dog's Back Legs

Arthritis affecting the hips, knees, or other hind-limb joints tends to show up in some fairly specific ways:

• Stiffness when getting up
• Difficulty standing
• Hind-leg limping
• Reluctance to climb stairs
• Difficulty jumping
• Shorter walks than usual
• Sitting differently than they used to
• Muscle loss around the hindquarters
• Difficulty getting into a car
• Reduced willingness to run or play

One important distinction is worth repeating here: a sudden, complete inability to use the back legs is not a typical presentation of ordinary arthritis. 

Arthritis-related hind-leg changes tend to develop gradually, so if your dog suddenly can't stand or use their hind legs at all, that's a reason for prompt veterinary evaluation, not something to assume is "just arthritis" and monitor at home.

What Causes Arthritis in Dogs?

Several overlapping factors contribute to a dog's likelihood of developing arthritis:

• Age and joint wear. Risk increases as dogs get older, since joint degeneration tends to accumulate gradually over the course of a dog's life.
• Previous injury. Ligament injuries, fractures, other joint trauma, or previous orthopedic surgery can all leave a joint more susceptible to arthritis later on, even after the initial injury has healed.
• Developmental or genetic joint problems. Conditions like hip or elbow dysplasia, or other forms of abnormal joint development, create structural issues that make arthritis more likely over time.
• Excess weight. Extra body weight increases the mechanical stress placed on joints with every step, and body fat itself has inflammatory effects that can worsen joint conditions beyond just the added physical load. Maintaining a healthy body condition is one of the most important, and most controllable, parts of arthritis management.
• Breed and individual risk factors. Some breeds have a higher predisposition to specific orthopedic problems, and a dog's size, build, and activity or injury history can all further influence their individual risk.

How Is Arthritis Diagnosed in Dogs?

Diagnosing arthritis typically involves several components working together, since arthritis can't be reliably diagnosed from a single symptom alone:

• Veterinary history: A discussion of your dog's symptoms, when they occur, and how they've changed over time
• Physical examination: A hands-on assessment of your dog's overall condition
• Palpation of joints: Your vet manually checking joints for pain, swelling, or abnormal movement
• Gait and movement assessment: Observing how your dog walks, stands, and moves to identify patterns of stiffness or lameness
• Evaluation for pain, stiffness, and reduced range of motion: Assessing how freely each joint moves and whether movement causes discomfort
• X-rays when appropriate: Imaging that can reveal joint changes consistent with arthritis
• Other diagnostic testing as needed: Additional imaging or bloodwork depending on the individual case, particularly if other conditions need to be ruled out

Because so many of these pieces work together to form a complete picture, it's worth being thorough with your vet about everything you've noticed, even changes that seem minor or unrelated.

Treatment for Arthritis in Dogs

Effective arthritis management typically draws on several strategies at once rather than relying on a single treatment. This multimodal approach tends to produce better, more sustainable results than any one intervention alone.

Weight Management

Maintaining an appropriate body condition is one of the most impactful things you can do for a dog with arthritis. Extra weight adds significant additional load to already-painful joints, so weight management should be approached individually with veterinary guidance, taking into account your dog's current condition, activity level, and any other health factors. 

Crash diets aren't appropriate here. Gradual, sustainable weight loss tends to produce better long-term results and is easier on your dog overall.

Appropriate Exercise

Arthritis doesn't mean exercise has to stop. In fact, regular, controlled movement helps maintain both mobility and the muscle strength that supports affected joints. Shorter, more frequent walks are often preferable to one longer, more strenuous outing, and the right amount and type of exercise should be adapted to your individual dog's specific condition. 

Avoid suddenly increasing activity levels, since a sudden jump in exercise intensity can trigger a flare-up in an arthritic joint.

Physical Rehabilitation

Canine physical therapy can meaningfully improve comfort and function for dogs with arthritis. This often includes strengthening exercises, range-of-motion work to maintain joint flexibility, and hydrotherapy where appropriate, since water's buoyancy allows dogs to build strength without adding stress to painful joints. The overall goal is maintaining the muscle mass surrounding affected joints, which helps stabilize and support them.

Home and Environmental Changes

Simple adjustments around your home can meaningfully reduce the daily strain your dog's joints experience:

• Comfortable, supportive bedding
• Non-slip rugs or mats on hard flooring
• Ramps where appropriate, to reduce jumping
• Limiting unnecessary stairs
• Making food and water bowls easily accessible
• Avoiding slippery floors where possible

Veterinary Pain Management

For many dogs, your veterinarian may prescribe medication to help control arthritis-related pain and inflammation. NSAIDs (non-steroidal anti-inflammatory drugs) are commonly used for this purpose, but they need to be prescribed and monitored appropriately by your vet, since dosing and suitability depend on your dog's individual health profile. Other medications may be appropriate depending on your dog's specific situation. 

Never give your dog human painkillers unless a veterinarian has specifically instructed you to do so.

Arthritis Medicine for Dogs

There are veterinary medications specifically formulated to manage arthritis pain and inflammation in dogs. NSAIDs are among the most commonly prescribed, though other medications or injectable treatments for arthritis may be appropriate in certain cases depending on the dog. The right choice depends on factors like your dog's age, overall health, any other medications they're taking, and the specifics of their condition, and ongoing veterinary monitoring may be necessary once a medication is started.

As above, never give your dog ibuprofen, naproxen, acetaminophen, or any other human medication unless your veterinarian specifically directs you to do so, since these can be toxic or even fatal to dogs.

Joint Supplements for Dogs

Joint supplements can also play a role as part of a broader arthritis-management plan. They're not a replacement for veterinary diagnosis or appropriate pain management, and supplements vary considerably in their ingredients and the evidence supporting them, so it's worth discussing supplementation with your veterinarian, particularly if your dog has other health conditions or takes other medications. The purpose of a joint supplement is to provide nutritional support for joint health, not to reverse existing arthritis damage. 

If you're wondering whether now is the right time to introduce one, our guide on when to start giving your dog joint supplements can help frame that conversation with your vet. 

Support Your Dog's Joint Health With Actistatin

Managing arthritis in dogs almost always involves combining several strategies: weight management, appropriate exercise, home modifications, and guidance from your vet on pain management or medication when needed. A daily joint supplement can be one piece of that broader plan, offering ongoing nutritional support for joint health alongside whatever else you and your vet decide is right for your dog.

Actistatin's canine supplements are formulated with clinically-researched ingredients, including glucosamine, chondroitin, and MSM, designed to support cartilage health and joint comfort as part of your dog's daily routine. Actistatin offers dosing built for your dog's size, with Small Dog Chews and Large Dog Chews formulated accordingly. 

To be clear, Actistatin is a joint-health supplement intended to provide nutritional support, not a cure for arthritis, and it works best as one component of a broader management plan developed with your veterinarian. 

If your dog is showing any of the signs discussed in this guide, particularly if they're a senior dog, our guide to choosing the best hip and joint supplement for senior dogs can help you think through your options.

We'd encourage you to speak with your veterinarian about whether adding a joint supplement makes sense for your dog's specific situation, especially if they have other health conditions or are currently on other medications. From there, explore Actistatin's full canine care collection to find the right fit for your dog's size and needs.

Signs of Arthritis in Dogs FAQ

What are the first signs of arthritis in dogs?

The earliest signs are often subtle, including slight stiffness after resting, taking longer to stand up, slowing down on walks, and mild changes in gait or temperament. These early signs are easy to mistake for normal aging, which is why it's worth mentioning any changes to your vet rather than waiting for an obvious limp to develop.

Is arthritis only a concern for senior dogs?

No. While arthritis risk does increase with age, younger dogs can develop arthritis too, particularly if they've had a previous joint injury, surgery, or a developmental condition like hip or elbow dysplasia. Age is one risk factor among several, not a requirement for the condition to occur.

What's the difference between normal aging and arthritis in dogs?

Normal aging can involve some general slowing down, but arthritis specifically involves joint inflammation and cartilage degeneration that tends to progress over time and often responds to targeted management. If you're noticing consistent stiffness, limping, or reluctance to move in specific ways, it's worth having your vet evaluate whether arthritis, rather than general aging, is the underlying cause.

Can joint supplements help my dog's arthritis?

Joint supplements may provide nutritional support for joint health as part of a broader arthritis-management plan, but they aren't a substitute for veterinary diagnosis, pain management, or other treatments your vet may recommend. They're best used alongside, not instead of, professional guidance, particularly for dogs with other health conditions or medications to consider.