Health & Medical

My friend's cat drools every time she is petted, a small dribble on the arm that she finds charming and vaguely funny. My own cat drools only when the toothache hits, a puddle by the food bowl that sends me straight to the clinic. Same behaviour, two completely different stories, and telling them apart is a matter of reading the rest of the cat rather than staring at the saliva and hoping for a clue.

Cat drooling splits into the happy and the hurting, and the two are easy to confuse if you only look at the puddle. A cat who drools while purring, kneading, and leaning into your hand is usually just blissed out, a throwback to kittenhood feeding behaviour that some cats never outgrow. Some have done it since they were kittens, and it means nothing except contentment and a damp sleeve you learn to expect when the cuddles start.

When drool is a warning

Drool that appears with other signs is the one to chase. A cat who suddenly drips while ignoring food, pawing at the mouth, or dropping kibble has a problem in the oral cavity. Dental disease is the common culprit: a fractured tooth, a resorptive lesion that eats the tooth from inside, or gum infection that smells terrible. Cats hide pain well, so the drool may be the first visible cue you get before weight starts to fall off and the coat loses its gloss.

Look at the rest of the picture rather than the puddle alone. Bad breath that clears a room, bleeding from the mouth, a preference for soft food or one side of the jaw, weight loss, or a filthy coat from a cat who stopped grooming: any of these with drool points at the mouth and deserves attention. Nausea from kidney trouble or a swallowed something can also produce saliva, but that usually comes with vomiting or a sudden lethargy that is hard to miss even in a stoic cat.

The home check is simple but requires patience and a calm cat. Lift the lip in good light, ideally while the cat is relaxed on a lap after a meal. You are not diagnosing; you are noticing redness, a broken tooth, or swelling that was not there last month. Most of what you find still needs a vet, but the description helps them plan, and a photo on your phone can be useful when the cat will not cooperate long enough for a second look at the clinic.

Do not assume the drool is behavioural just because he ate a moment ago. Cats with dental pain often approach food, then recoil, then try again, a heartbreaking loop that owners misread as fussiness. If the bowl is half-full and he is drooling, the mouth is the first place to look, not the food, and the sooner the better for his comfort and his weight.

If the drool is new, copious, or paired with not eating, book the visit rather than waiting for it to pass. Dental work under anaesthetic is routine and transformative; cats who ate reluctantly for months often regain appetite within a day and act years younger, rediscovering the crunch they had abandoned. The happy drooler needs nothing but a towel and your tolerance. Knowing which one you have is the whole game, and it is not hard once you look past the obvious.

Prevention is mostly dental, and dental is mostly daily. A cat whose teeth are brushed even a few times a week is far less likely to drool from pain, because the disease that causes it builds slowly and the brush interrupts that build. Many cats accept it with patience and a finger brush and a paste made for them, and the effort spares both the cat the procedure and you the bill that comes with it.

Watch kittens and seniors especially. Young cats rarely drool from mouth trouble, so any drool in a kitten deserves a look for a birth issue or an injury. Seniors develop the resorptive lesions more often, and the slow decline is easy to miss until eating changes. The cat who once cleaned his bowl and now leaves half is telling you something, and the drool is the punctuation, not the whole sentence.

The happier ending is common. A cat who arrives drooling and off his food often leaves the clinic the next day with the tooth gone and the appetite back, behaving like a younger version of himself. Dental disease is one of the most under-treated sources of feline misery precisely because cats hide it, and your willingness to look under the lip is the difference between a cat who suffers quietly and one who eats with relief.

So the next time you see a damp patch on your sleeve, ask which cat you are holding. The one who is purring is fine. The one who has gone quiet at the bowl is not, and the few days you act on it may be the few days that save a tooth, or more. The drool is a sentence with two meanings, and only you can read which one your cat is speaking.