Signs Your Pet Is in Pain That Are Easy to Miss

A cat that suddenly stops grooming — or a dog that begins obsessively licking one area — may be responding to pain. Cats in discomfort often let their coats become dull, matted, or unkempt because the effort of grooming hurts. Conversely, focused licking or chewing at a specific spot can indicate localized pain or irritation beneath the skin.

Coat condition is one of the more visible windows into your pet's health. For more on what fur changes can signal, see what your pet's coat is telling you.

Appetite changes are one of the earliest and most reliable indicators that something is wrong. Dental pain, abdominal discomfort, nausea from an underlying condition, or generalized malaise can all suppress a pet's interest in eating. A pet who skips one meal may simply be off; a pet who refuses food for more than 24 hours needs attention.

Reduced water intake can compound the problem quickly. Signs of dehydration in pets can develop faster than most owners expect, particularly in smaller animals.

Pain disrupts rest. A pet that can't get comfortable — shifting positions frequently, getting up and lying back down, or sleeping far more than usual — may be trying to find relief. Restlessness at night, or a pet that used to sleep through and no longer does, is worth tracking closely.

Increased sleep can also indicate pain, as lethargy is a common physiological response to discomfort. If your pet seems unusually withdrawn or sleeps through activities that would normally spark their interest, that shift in baseline is meaningful.

A pet in pain often wants to be left alone. If a normally social dog retreats under furniture, or a friendly cat stops seeking contact, discomfort may be the reason. Equally, a pet that snaps, growls, or hisses when touched — especially in areas they previously tolerated — may be protecting a painful spot.

These behavioral shifts are easy to misread as attitude or mood. But sudden personality changes, particularly in animals with previously stable temperaments, are a red flag. The line between anxiety and physical pain is worth exploring with your vet, as the two frequently overlap.

Limping is obvious, but earlier signs of musculoskeletal pain are not. Watch for a pet that hesitates before jumping onto furniture they used to leap onto effortlessly, struggles on stairs, shifts weight to one side while standing, or holds their head lower than usual. These compensatory postures indicate the body is working around discomfort.

Cats with arthritis, for instance, often simply become less active — their pain isn't dramatic, just quieter. Dogs may reduce their pace on walks or lag behind rather than vocalize. Posture and gait changes deserve attention even when no single movement looks overtly wrong.

Eye pain, ear infections, dental disease, and facial discomfort often manifest as head-focused behaviors. Repeated pawing at the muzzle or ears, persistent squinting, head tilting, or vigorous head shaking can all indicate something painful is happening in that region. These signs are easy to attribute to minor irritation, but if they recur or persist, they need evaluation.

Dental pain in particular is chronically underrecognized in pets. A pet with a painful tooth may show no obvious signs other than a mild reduction in chewing on one side or slightly altered food preferences — easily missed unless you're looking.