15 Subtle Signs Your Dog or Cat May Be Living With Pain

Pets are remarkably good at hiding pain.

In the wild, showing weakness can make an animal vulnerable, and that instinct remains strong in our dogs and cats today. As a result, many pets continue eating, playing, and interacting with their families even while experiencing significant discomfort.

At our Waterloo veterinary hospital, one of the most common things we hear from pet owners is:

“I had no idea my pet was in pain.”

The good news is that there are often subtle clues. Recognizing these signs early can help your veterinarian identify underlying health issues and improve your pet’s comfort and quality of life.

1. Sleeping More Than Usual

While older pets naturally slow down with age, a noticeable increase in sleeping or resting can sometimes indicate discomfort.

Pets experiencing pain often choose to rest more because movement aggravates the problem. This is especially common with arthritis, joint disease, dental pain, and chronic medical conditions.

2. Reluctance to Jump or Climb Stairs

Has your cat stopped jumping onto their favourite perch? Is your dog hesitating before climbing stairs or getting into the car?

Many pet owners assume these changes are simply part of aging, but they can be early signs of arthritis, joint pain, or mobility issues.

3. Changes in Activity Levels

A pet that once loved walks, games, or outdoor adventures may become less enthusiastic when pain is present.

You may notice:

• Shorter walks

• Less interest in play

• Fatigue during activities

• Slower movement

4. Changes in Grooming Habits

Cats are particularly prone to altering their grooming behavior when they’re uncomfortable.

Pain may cause:

• Overgrooming certain areas

• Matted fur

• Poor coat condition

• Reduced grooming overall

Dogs may also excessively lick painful joints, paws, or other areas of the body.

5. Increased Irritability

Even the friendliest pets can become less tolerant when they’re hurting.

Pain may cause:

• Growling when touched

• Snapping unexpectedly

• Avoiding interaction

• Becoming withdrawn

Behaviour changes are often one of the earliest signs that something isn’t right.

6. Changes in Appetite

Pain can significantly affect appetite.

Dental disease, arthritis, abdominal discomfort, and many other medical conditions may cause pets to:

• Eat less

• Eat more slowly

• Avoid hard food

• Show less interest in treats

7. Difficulty Lying Down or Standing Up

Pets experiencing joint or muscle pain often struggle with transitions.

Watch for:

• Stiffness after resting

• Difficulty getting comfortable

• Hesitation when standing

• Multiple attempts to lie down

8. Limping or Altered Gait

While some causes of limping are obvious, many pets develop subtle changes in how they move.

You may notice:

• A shortened stride

• Favouring one leg

• Bunny hopping

• Weight shifting

Even intermittent limping warrants veterinary attention.

9. Excessive Panting

Dogs may pant excessively when they’re uncomfortable, even when temperatures are normal.

While panting has many potential causes, unexplained or persistent panting should always be discussed with your veterinarian.

10. Hiding More Often

Cats are especially likely to hide when they don’t feel well.

A cat that suddenly spends more time under furniture, in closets, or in secluded areas may be experiencing pain or illness.

Dogs may also seek quiet places away from family members when they feel uncomfortable.

11. Changes in Posture

Pain can affect the way pets hold themselves.

Watch for:

• Hunched backs

• Tucked abdomens

• Head carried low

• Abnormal sitting positions

These changes can sometimes indicate orthopedic or abdominal discomfort.

12. House Soiling

A previously well-trained dog or cat that begins having accidents may not be experiencing a behavioral issue.

Painful conditions affecting the joints, spine, urinary tract, or digestive system can make it difficult for pets to reach their usual bathroom location in time.

13. Vocalizing More (or Less)

Pain may cause pets to:

• Whine

• Cry

• Growl

• Yowl

• Meow excessively

Interestingly, some pets become unusually quiet when they’re uncomfortable.

Any significant change in vocalization patterns deserves attention.

14. Changes in Breathing

Pain can affect breathing patterns.

You may notice:

• Faster breathing

• Shallow breathing

• Increased effort

• Restlessness while resting

Difficulty breathing should always be treated as an urgent medical concern.

15. “Just Not Themselves”

Perhaps the most important sign is simply a change in your pet’s normal personality.

Pet owners know their companions better than anyone. If you find yourself saying:

“Something seems off.”

Trust that instinct.

Subtle changes in behaviour are often the first clue that a pet may be experiencing pain, illness, or discomfort.

Common Causes of Pain in Dogs and Cats

Many medical conditions can cause chronic or acute pain, including:

• Arthritis

• Dental disease

• Injuries

• Ear infections

• Bladder stones

• Gastrointestinal disorders

• Back and neck problems

• Cancer

• Kidney disease

• Chronic inflammatory conditions

Many of these conditions can be effectively managed when identified early.

When Should You Contact Your Veterinarian?

If you notice any of the signs listed above, it’s a good idea to schedule an examination.

While not every change indicates a serious problem, early evaluation often leads to earlier treatment, improved comfort, and better long-term outcomes.

At our Bridge Street Veterinary Hospital, we use comprehensive physical examinations, diagnostic testing, and individualized treatment plans to help identify the cause of discomfort and improve your pet’s quality of life.

Helping Pets Live More Comfortable Lives

Pain isn’t always obvious, but it can have a significant impact on your pet’s health and happiness.

Regular wellness examinations, routine screening tests, and paying attention to subtle behavioral changes can help identify problems before they become more serious.

If you have concerns about your dog’s or cat’s comfort, our veterinary team is here to help. We proudly serve pets and their families throughout Waterloo, Kitchener, and the surrounding communities.