“My pet just isn’t themselves anymore.”

Many pet owners expect arthritis to cause limping, stiffness, or difficulty getting up. What often comes as a surprise is how chronic pain can change a pet’s personality.

If your once-friendly dog has become grumpy, your playful cat prefers to hide, or your energetic companion seems withdrawn, arthritis could be playing a bigger role than you realise.

Understanding the connection between pain and behaviour can help you recognise the early signs of arthritis and improve your pet’s quality of life.

Pain Affects More Than Movement

Arthritis is a progressive condition that causes inflammation and deterioration within the joints. As the disease advances, everyday activities such as walking, climbing stairs, jumping, or even lying down comfortably can become painful.

Unlike humans, pets cannot tell us when they hurt. Instead, they often communicate discomfort through changes in behaviour.

Many owners mistake these changes as normal ageing, but they may actually be signs that a pet is living with ongoing pain.

Common Personality Changes Linked to Arthritis

1. Increased Irritability

A pet experiencing chronic pain may become less tolerant of handling or physical contact.

You might notice:

• Growling when touched
• Snapping unexpectedly
• Resisting grooming
• Becoming protective of certain areas of the body

Even the gentlest pet can react defensively when they anticipate pain.

2. Withdrawal and Reduced Social Interaction

Many arthritic pets become quieter and less engaged with family members.

They may:

• Sleep more than usual
• Spend more time alone
• Avoid attention or cuddles
• Stop greeting family members at the door

This isn’t because they love you less; it may simply be that movement has become uncomfortable.

3. Reduced Playfulness

One of the earliest signs of arthritis is a loss of enthusiasm for activities a pet once enjoyed.

Your pet may:

• Show less interest in toys
• Avoid running or chasing games
• Refuse walks they previously loved
• Stop jumping onto furniture or climbing stairs

Often, owners assume their pet is simply slowing down with age when pain is limiting their participation.

4. Anxiety and Restlessness

Chronic discomfort can make it difficult for pets to relax.

You may notice:

• Pacing
• Frequent position changes
• Difficulty settling at night
• Increased vocalisation
• Signs of anxiety when left alone

Persistent pain can impact both physical and emotional wellbeing.

5. Changes in House Habits

Cats may stop using litter trays with high sides because climbing in is painful. Dogs may have accidents indoors if getting outside quickly becomes difficult.

These changes are often behavioural symptoms of a physical problem rather than a training issue.

Cats Are Especially Good at Hiding Pain

Cats have evolved to conceal weakness, making arthritis particularly difficult to detect.

Signs may include:

• Less jumping onto favourite spots
• Reduced grooming
• Increased sleeping
• Hesitation using stairs
• Irritability when handled

Because these changes can be subtle, many arthritic cats go undiagnosed for years.

Why Early Recognition Matters

While arthritis cannot be cured, it can often be managed very successfully, helping pets stay active, comfortable, and enjoy a better quality of life.

The earlier arthritis is recognised, the sooner we can develop a personalised treatment plan to slow progression, manage pain, and support joint health.

Treatment options may include:

• Weight management
• Joint-support supplements
• Pain-relief medications
• Lifestyle modifications
• Physical rehabilitation and physiotherapy
• Environmental adjustments at home
• Joint-support injections
• Advanced arthritis pain management therapies

New Advances in Arthritis Care

Many pet owners are surprised to learn that arthritis treatment has come a long way in recent years.

Joint-support injections can help improve joint function by supporting the health of the joint environment and enhancing lubrication within the joint. By reducing friction and supporting cartilage health, these treatments can help improve comfort, mobility, and overall joint function in pets with osteoarthritis.

For dogs, Beransa® is a monthly injection specifically designed to control osteoarthritis pain. Beransa works by targeting Nerve Growth Factor (NGF), a key contributor to arthritis pain. By blocking pain signals before they reach the brain, Beransa can help dogs move more comfortably, stay active, and enjoy a better quality of life.

For cats, Solensia® offers a similar breakthrough approach. As the first feline-specific arthritis pain treatment of its kind, Solensia targets the same pain pathway by neutralising NGF, helping reduce osteoarthritis pain and improve mobility. Many cat owners notice positive changes such as increased jumping, grooming, playing, and social interaction after treatment.

Because Beransa and Solensia work differently from traditional anti-inflammatory medications, they can provide effective pain relief without relying solely on long-term anti-inflammatory use. This can be particularly beneficial for some pets where ongoing anti-inflammatory medication may not be the ideal option.

Every pet is unique, which is why our veterinarians will recommend the most appropriate treatment plan based on your pet’s age, lifestyle, health status, and severity of arthritis.

When arthritis pain is effectively managed, many pets regain their confidence, mobility, and enjoyment of life—allowing them to continue doing the things they love most.

Concerned About Your Pet’s Behaviour? Have a Chat With Our Team

You know your pet better than anyone. If your dog or cat isn’t acting like themselves, it could be more than just a sign of ageing. Changes in behaviour are often one of the earliest indicators that a pet may be experiencing arthritis, joint pain, or ongoing discomfort.

It’s worth reaching out to our team if your pet:

• Seems less interested in walks, playtime, or other favourite activities
• Has become unusually grumpy, withdrawn, or less social
• Appears stiff after resting or sleeping
• Struggles with stairs, jumping, or getting up from lying down
• Shows signs of discomfort when touched or handled
• Is moving more slowly than usual or avoiding certain movements

The sooner arthritis is identified, the sooner we can help your pet feel more comfortable. Early intervention allows us to create a personalised treatment plan that may include joint-support therapies, arthritis injections, Beransa® for dogs, Solensia® for cats, pain management, and lifestyle recommendations tailored to your pet’s needs.

Helping Your Pet Feel Like Themselves Again

Many pet owners are relieved to discover that changes in behaviour aren’t simply a normal part of getting older. Often, they’re your pet’s way of telling you that something hurts.

The good news is that with today’s advanced arthritis treatments and ongoing veterinary care, many pets can regain their confidence, improve their mobility, and return to enjoying the activities they love.

If your pet’s personality seems to have changed, don’t assume they’re just slowing down with age. Whether it’s a reluctance to play, difficulty moving, or simply not seeming like themselves, their behaviour may be telling you they need help.

At Clyde Vet, we’re here to support both you and your pet every step of the way. If you’re concerned about arthritis or mobility changes, contact our friendly team to book an assessment and explore the treatment options available to help your pet live a happier, more comfortable life.

Book an Appointment Today