How to Tell If Your Pet Is in Pain: Subtle Signs Most Owners Miss

One of the hardest things about being a pet owner is that our pets can’t tell us when something hurts.

Even worse—dogs and cats are instinctively good at hiding pain. In the wild, showing weakness makes an animal vulnerable. That instinct is still there.

So by the time many owners notice something is wrong, their pet has often been uncomfortable for a while.

Here’s how to spot the early, subtle signs of pain before things become serious.

Why pets hide pain

Animals are incredibly stoic. Limping, crying, or obvious distress usually means the pain is already significant. That’s why changes in behaviour are often the first clue.

Behaviour changes to watch for

1. Withdrawal or hiding

If your normally social pet:

hides under beds
avoids family members
stays in one room
or seems “not themselves”

…it can be a sign they’re uncomfortable.

Cats, in particular, often withdraw when they’re in pain.

2. Aggression or irritability

Pain lowers tolerance. A dog who snaps when touched, or a cat who suddenly hisses, may be protecting a sore area.

This is not “bad behaviour”—it’s communication.

3. Restlessness or inability to settle

Constantly changing position, pacing, or struggling to get comfortable can signal discomfort.

Physical signs that are easy to miss

4. Changes in posture or movement

stiffness when getting up
reluctance to jump
slower on stairs
favouring one side

These can indicate joint pain, muscle strain, or injury.

5. Excessive licking or chewing

Pets often lick painful areas.

If you notice:

constant licking of a paw
chewing at a joint
licking the same spot repeatedly

…it’s worth investigating.

6. Reduced appetite

Pain can suppress appetite. If your pet suddenly eats less or ignores favourite treats, it’s a red flag.

7. Changes in grooming

Cats that stop grooming may be in pain. Dogs that suddenly over-groom one area may also be reacting to discomfort.

Facial and vocal clues

8. “Different” eyes or expression

Squinting, wide eyes, or a tense face can indicate pain—especially in cats.

9. Whining, growling, or unusual vocalising

Not all pets cry in pain. Some become quieter, others more vocal. Any change is worth paying attention to.

Litter box and toilet changes

10. Accidents in the house

If a toilet-trained pet suddenly starts having accidents, it may not be behavioural. Pain, infection, or mobility issues can be the cause.

When to act