Moderate severity

Pica (Eating Non-Food Items)

The persistent eating of wool, plastic, cables or litter. Part behaviour, part medicine — and a genuine risk of intestinal obstruction.

⚠️ Common symptoms

Chewing and swallowing wool, fleece, plastic bags, elastic, cables or houseplantsSucking and kneading fabric, progressing to ingestionHoles appearing in jumpers, blankets and upholsteryEating cat litter, soil or paperVomiting, sometimes containing fabric or plasticReduced appetite, straining, or a painful abdomen if an obstruction developsRepeated episodes of unexplained vomiting or diarrhoea

Every cat chews something it shouldn't occasionally. Pica is the version that persists — a cat that seeks out fabric or plastic deliberately, returns to it, and swallows it. It is one of the few feline problems where the behaviour itself is not really the danger. The danger is the intestine.

The wool-eating variant is the best described, and its association with Siamese and Burmese lines has been recognised for decades. Affected cats typically start by suckling and kneading soft fabric, which is easy to find endearing, and some progress from sucking to chewing to swallowing over months. Early weaning appears repeatedly in the histories of these cats, which fits a picture of a nursing behaviour that was interrupted before it could resolve and then found a substitute.

Boredom is the other great driver, and it is the more actionable one. An indoor cat has a nervous system built for hunting several times a day and an environment that requires nothing of it. Bowl-fed, unplayed-with and left alone for nine hours, some cats will find their own project, and a dangling cable or a fleece blanket is an available one. The strongest single intervention in most non-medical pica is not a deterrent spray; it is turning eating back into work, with puzzle feeders and scattered foraging, plus real interactive play twice a day.

The medical side must not be skipped, though, because a cat that suddenly begins eating litter or soil in middle age is telling you something. Anaemia is the classic association, hyperthyroidism and diabetes both distort appetite, and intestinal disease can produce peculiar cravings. Bloodwork and a faecal check are a reasonable starting point in any new-onset case.

Where owners most often go wrong is in underestimating linear foreign bodies. A swallowed strip of fabric, a length of thread, tinsel or a hair tie can anchor at the base of the tongue or in the stomach while the rest travels on, and the intestine then bunches up along it like a curtain on a rail and can be cut through by the tension. It is one of the true abdominal emergencies, it develops within a day or so, and it does not announce itself with anything more dramatic than a cat that is quiet, off its food and vomiting. If a cat with a known habit of eating fabric goes off colour, that history belongs in the first sentence you say to the vet.

🔍 Causes

Pica sits at the intersection of behaviour and disease, and both sides need considering. Behavioural drivers include early weaning, which is strongly associated with wool-sucking that later becomes wool-eating; boredom and under-stimulation in indoor cats; anxiety and stress, particularly around household change; and attention-seeking in cats that have learned it produces a reaction. Medical drivers include anaemia, hyperthyroidism, diabetes, inflammatory bowel disease, intestinal parasites, and diets low in fibre or specific nutrients. There is also a clear breed pattern — Siamese, Burmese and other Oriental breeds are markedly over-represented, particularly for wool-eating, which points to a genetic component. In practice many cats have a mix, with a genetic predisposition brought out by boredom or stress.

🛡 Prevention

Prevention is mostly about environment and routine. Keep wool, string, hair ties, rubber bands and plastic bags out of reach, and treat these as seriously as you would a bottle of medicine — a swallowed hair tie can require abdominal surgery. Provide daily interactive play, ideally two sessions of ten to fifteen minutes with a wand toy, and use puzzle feeders rather than a bowl so that eating occupies time. Grow cat grass to redirect chewing. Kittens should stay with their mother until at least twelve weeks, since early weaning is one of the few well-supported risk factors. And where a cat is prone to it, watch for stress triggers — a new pet, a house move, building work — and increase enrichment before the behaviour escalates rather than after.

💊 Treatment

Management runs on two tracks at once, because the causes usually do. Medically, a vet will look for the conditions that drive appetite for odd substances — anaemia, hyperthyroidism, diabetes, intestinal disease, parasites and dietary deficiency — and treat what is found. Behaviourally, the approach is to remove opportunity while adding stimulation: put target items away rigorously, since a determined wool-eater will find a single sock, and use bitter-tasting deterrent sprays on cables and furniture. Increase daily interactive play, add puzzle feeders so that foraging takes real effort, and split food into several small meals if hunger appears to be a trigger. Adding safe plant material — a pot of cat grass — gives a legitimate outlet for cats fixated on chewing greenery. For severe, compulsive cases in which the cat is at real risk, veterinary behaviourists sometimes prescribe medication such as clomipramine or fluoxetine alongside the behavioural plan.

When to see a vet: Any cat that repeatedly eats non-food items should be examined, both to look for an underlying medical cause and to plan management before something gets stuck. Treat as an emergency any cat that is vomiting repeatedly, straining unproductively, hunched or crying, refusing food, or has a tense painful abdomen — a linear foreign body such as thread or a strip of fabric can saw through the intestinal wall and is life-threatening within a day. If you see string, thread or elastic protruding from the mouth or anus, never pull it: go straight to a vet, because pulling can cause serious internal injury.

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⚕️ Medical disclaimer

  • This information is educational only and is not a substitute for veterinary advice.
  • Symptoms overlap between conditions — only a vet can diagnose accurately.
  • Never withhold treatment or self-medicate based on information found online.
  • When in doubt, call your vet. Early intervention almost always leads to better outcomes.

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