Pica in Dogs: Why Dogs Eat Non-Food Items and What to Do

By Dr Duncan Houston

A dog that repeatedly swallows socks, stones or pieces of plastic needs more than a sturdier toy. The behaviour can lead to an obstruction, poisoning or damage to the mouth and gut.

The immediate priority is any object already swallowed. The longer-term task is finding out why it keeps happening.

Quick Answer

Pica means eating non-food material, particularly when the behaviour recurs. It can have medical, behavioural or mixed causes and does not automatically indicate a vitamin deficiency. Contact your vet promptly after swallowing a potentially dangerous object, even if your dog currently seems normal.

Why do dogs eat things they should not?

Some dogs ingest objects during exploration or play; others show persistent searching and swallowing. Gastrointestinal discomfort, altered appetite, dietary inadequacy, stress and compulsive behaviour are possible contributors. A clinical report on pica and chronic enteropathy highlights that digestive disease should be considered rather than assuming the problem is purely behavioural.

Age, diet, appetite, stools, vomiting and the circumstances of each episode help direct investigations. A dog stealing socks during a chase game may need different management from one swallowing bedding when left alone.

Assess the immediate risk

When is this an emergency?

Breathing difficulty, choking, repeated retching, a painful abdomen or collapse requires immediate care. String protruding from the mouth or anus must not be pulled because it may be anchored internally. Do not induce vomiting unless a veterinarian specifically advises it for the object and situation.

Cornell's obstruction guidance explains why swallowed objects sometimes need endoscopic or surgical removal. Passing stool does not reliably exclude a partial obstruction.

What will your vet investigate?

An examination and history come first. Imaging may be needed after ingestion, while blood tests, faecal testing or digestive investigations are chosen according to other signs. Not every object appears clearly on an X-ray. Persistent concerns can require repeat imaging or ultrasound.

Reduce the chance of another ingestion

1. Secure laundry, rubbish, children's toys, stones and other preferred objects.
2. Supervise outdoors and use a lead where scavenging hazards cannot be removed.
3. Offer suitable food enrichment and toys that your dog does not dismantle and swallow.
4. Teach trade and leave-it skills using rewards in easy situations.
5. Record what is eaten, when and what was happening beforehand.
6. Follow treatment for any identified medical or behaviour problem.

A basket muzzle designed to limit scavenging may help during supervised outings after careful positive introduction. It is not appropriate unattended restraint or a substitute for investigating pica.

Common mistakes

• Giving mineral supplements without evidence of a deficiency.
• Chasing the dog, encouraging faster swallowing.
• Assuming every object will pass because a previous one did.
• Leaving a muzzled dog alone.

Support long-term improvement

Provide a complete diet, suitable exercise, sniffing, rest and predictable routines. Behaviour treatment should use humane methods consistent with AVSAB guidance. Some dogs need ongoing environmental management even when the underlying problem improves.

Frequently asked questions

Does eating soil prove a deficiency?

No. It has several possible explanations and should be assessed in context.

Can a dog seem fine with an obstruction?

Early or partial obstruction can have subtle signs. Seek advice after a concerning ingestion.

Will my dog grow out of it?

Some exploratory chewing changes with age, but repeated swallowing is too risky to leave unaddressed.

Preventing access keeps your dog safe while investigation and training address the reason behind the behaviour.

ASK A VET™ supports informed health observations. Keep an ingestion diary for your treating vet, and contact a clinic directly after swallowing a dangerous object.