By Dr Duncan Houston
Finding holes in a blanket or a chewed plastic bag raises an important question: did your cat just damage it, or swallow the missing pieces? That difference changes what you should do next.
Repeatedly eating non-food objects is called pica. It deserves attention even when your cat seems well, because another episode can lead to poisoning or a digestive blockage.
Quick Answer
Pica in cats means repeatedly eating non-food material, and it can have medical, nutritional or behavioural contributors. Arrange a veterinary assessment and prevent access to the items your cat targets. If anything may have been swallowed, call your vet now for advice; suspected string or toxin ingestion needs immediate advice even without symptoms. Vomiting, abdominal pain, refusal to eat, collapse or breathing difficulty after an ingestion requires emergency care.
Is sucking or chewing the same as pica?
A cat may suck a blanket without removing fibres, chew an object and spit it out, or actually swallow pieces. Tell your vet which behaviour you have seen. If there are missing pieces, do not assume they were spat out.
Swallowing carries the greatest risk of internal injury, but chewing electrical cords, sharp objects or toxic plants is also dangerous. A label such as “just wool-sucking” does not make an unsafe object suitable to leave out.
UC Davis explains that only some cats that chew objects consume them. Pica is a description of what a cat does, not proof of a compulsive disorder.
How urgently does your cat need help?
| What you notice | Main concern | Next step |
|---|---|---|
| Sucking or chewing without known ingestion, with normal appetite and activity | A repeated behaviour that could become hazardous | Remove unsafe targets and book a veterinary assessment if it persists. |
| Missing pieces or possible ingestion, even if your cat looks normal | The material may cause obstruction or poisoning | Call your vet now with details of the item and timing. Do not wait to see it in the litter tray. |
| String, thread, ribbon, a needle or a potentially toxic substance swallowed | Internal injury or toxicity can develop before obvious illness | Seek immediate veterinary advice and follow instructions for urgent attendance. |
| Vomiting, painful abdomen, refusal to eat, marked weakness, collapse or breathing difficulty after ingestion | A serious complication may already be present | Go to an emergency veterinary service immediately. |
Why do cats eat things they should not?
Medical and nutritional problems
Check health before assuming boredom. Your vet will review the diet, weight, appetite, digestion and other changes. A nutritional deficiency is a possibility to investigate, not a reason to start supplements.
Anaemia is another important consideration, particularly with litter eating. International Cat Care identifies anaemia as a possible medical cause of pica. Eating litter does not diagnose anaemia, and anaemia does not automatically mean iron deficiency.
Digestive disease can also be relevant. A small exploratory study of eight cats eating fabric found several gastrointestinal abnormalities; four cats improved partially with treatment. Those findings support investigating health problems, but do not establish that digestive disease causes every case or that one treatment will work for all cats.
Stress and repetitive behaviour
Changes at home, tension between cats and limited opportunities for activity may contribute. Some cats develop persistent, repetitive behaviour that needs a veterinary behaviour assessment. Medical and behavioural problems can occur together.
Early habits and individual susceptibility
Early weaning has been associated with non-nutritive sucking, and wool-related behaviours are reported in some Oriental breeds. Neither history nor breed can establish the cause in an individual cat. Avoid treating pica as evidence that a cat was traumatised or that an owner caused the problem.
When is this an emergency?
Suspected string ingestion is urgent even if your cat is still eating or playing. String can become anchored and damage the intestine as it moves. The American College of Veterinary Surgeons describes the obstruction and perforation risks of swallowed objects.
Never pull string from the mouth or anus, and do not try to cut string from under the tongue. Leave removal to the veterinary team. Contact an emergency vet immediately for the warning signs in the table or a suspected toxic exposure.
Do not make your cat vomit at home. Hydrogen peroxide and other home methods can cause harm. The ASPCA advises that there is no safe home method for inducing vomiting in a cat. Do not give oil, laxatives or a large meal to push an object through.
What should you do next?
- Prevent another ingestion. Close away the targeted item and move your cat to a comfortable space without similar hazards. Avoid chasing or wrestling with your cat.
- Record useful details. Photograph the damaged object and note the material, missing amount and possible time of ingestion. Keep packaging from any chemical or medication involved.
- Arrange the appropriate assessment. Use urgent advice for possible ingestion. For an ongoing habit without ingestion or illness, book a consultation and bring the usual food details and a behaviour diary.
- Follow the investigation plan. Examination and selected blood, urine or stool tests may be appropriate. Possible obstruction can require X-rays or ultrasound; treatment may involve endoscopy or surgery.
- Track progress. Record attempts, items targeted, appetite, vomiting and stools. Arrange follow-up with your vet and report any new ingestion immediately.
If anxiety or compulsive behaviour remains a concern, ask about a veterinarian with behaviour expertise. Medication may sometimes support a behaviour plan, but should not replace checking health or securing the home.
Common mistakes to avoid
- Waiting for illness because the cat has swallowed similar things before.
- Assuming litter eating proves a vitamin or mineral deficiency.
- Punishing the behaviour or using hot sauce, essential oils or other irritating deterrents.
- Offering a chewable “alternative” that the cat can also tear up and swallow.
How can you reduce future episodes?
Start with a room-by-room check for loose thread, hair ties, plastic, laundry and accessible rubbish. Put sewing supplies in closed containers and protect electrical cables. Choose bedding and toys according to what your particular cat attempts to eat.
Build a predictable routine with daily play, places to climb and hide, and separate resources where cats compete. Offer new activities gradually. Supervise feeding puzzles and toys initially, remove damaged items, and put string toys away after play. Enrichment needs to remain safe when supervision ends.
Use a complete diet appropriate for your cat's life stage and medical needs. Ask your vet before changing fibre intake or using supplements. Restricting access prevents injury while you work on the underlying problem; it does not identify that problem by itself.
Frequently Asked Questions
Why does my cat eat plastic?
Attraction to the material, stress or health problems may contribute. Check whether pieces are missing and seek veterinary advice if ingestion is possible.
Can kittens grow out of pica?
Some behaviours change with age, but waiting for maturity is not a safe plan for a kitten swallowing objects. Prevent access and discuss the behaviour with your vet.
Does pica always mean my cat lacks nutrients?
No. A diet review is useful, but medical and behavioural causes also need consideration. Do not add iron or other supplements without a veterinary recommendation.
Can my cat pass swallowed string naturally?
You cannot reliably predict this at home. Call your vet immediately, even if your cat seems comfortable, and never pull visible string.
Can pica be cured?
Improvement depends on the cause and the individual cat. Some need ongoing environmental management and veterinary behaviour support. A reduction in episodes does not make future ingestion safe.
Make safety the first step
Work out whether your cat is swallowing material, secure the items it targets and investigate the reason with your vet. Possible ingestion needs prompt advice; repeated attempts need a longer-term plan.
For more practical information about caring for your cat, explore ASK A VET™. If your cat may have swallowed something harmful, contact a veterinary service directly so treatment is not delayed.
The ASK A VET™ Tracker logs live location and activity trends, so a change in routine never goes unnoticed.
Every ASK A VET article is written and reviewed by qualified veterinarians.
