Pica is the persistent eating of things that are not food. In puppies and kittens some mouthing is normal exploration, but a pet who repeatedly swallows fabric, rubber, soil or plastic is showing a pattern worth investigating. Medical causes, dietary factors and anxiety all sit behind it, and swallowed objects carry a real obstruction risk.
The difference between chewing and swallowing
Chewing is normal. Dogs explore with their mouths, puppies chew through teething, and plenty of adult dogs shred a cushion out of boredom without ever swallowing a piece. That is a training and management issue.
Pica is different. It is the swallowing that defines it, and it tends to be repetitive and focused. Owners often describe a specific target: this dog eats socks, that one eats pebbles from the garden, this cat sucks and chews wool blankets. The specificity is a clue in itself, and it is one of the more useful things to describe at an appointment.
The distinction matters because the risks and the answers are different. A shredder needs better management and more appropriate outlets. A swallower needs a medical work-up.
Why this is not just a bad habit
The most common assumption is that a dog who eats socks is being naughty or was not trained properly. Sometimes that is part of it. Often it is not, and treating a medical problem as a discipline problem means it continues for years.
Several physical conditions are recognised as driving this behaviour. Anaemia can prompt animals to eat soil, gravel or litter. Conditions affecting the absorption of nutrients from the gut can leave a pet genuinely hungry despite eating normal meals. Chronic gastrointestinal discomfort, parasites, liver disease and hormonal conditions all appear on the list. In older cats, an overactive thyroid can drive a marked increase in appetite and unusual eating behaviour. Some medications increase appetite substantially as a side effect.
Because those are all identifiable, a physical examination and bloodwork are the sensible first step rather than the last resort. Our diagnostic services cover the initial screening, and a medical consultation sets those results beside a proper history of what your pet targets and when.
The behavioural side is real too
Once medical causes have been addressed, the behavioural picture usually becomes clearer. Anxiety is a common driver, and pica frequently increases when a household routine changes: a new schedule, a move, a new pet or person, or long stretches alone. Late August is a period when several of those land at once.
Boredom and insufficient mental work play a part, particularly in intelligent, active dogs living in apartments and condos. Attention-seeking is another mechanism, and it is easy to reinforce accidentally. A dog who picks up a sock and is immediately chased around the flat has learned that socks produce an entertaining game, and swallowing quickly is how they win it.
Early weaning and long periods of confinement are recognised contributors in some cats, and wool sucking in particular is more often reported in certain oriental breeds. Our article on understanding dog anxiety covers the anxious end of this in more detail.
Diet is worth a proper look
Not because pica is usually a deficiency, since in well fed pets on a complete diet it generally is not, but because the practical details of feeding can make a difference. Meal frequency, portion size, the fibre content of the diet and how quickly a pet finishes their food all influence how satisfied they feel between meals.
A pet who empties a bowl in ninety seconds and then hunts the flat for something else to swallow may simply need the same food delivered differently, through slow feeders, puzzle feeders or scattered portions. Our guide to feeding your cat properly covers the principles for cats, and any change worth making should be discussed rather than improvised.
The risk that makes this urgent
The reason pica is more than an inconvenience is intestinal obstruction. A swallowed object that does not pass blocks the movement of food and fluid, and that becomes a surgical emergency.
Watch for repeated vomiting, including retching that carries on long after the stomach has emptied, refusing food, a painful or tense abdomen, restlessness and an inability to settle, straining without producing stool, or a pet who becomes progressively flat and quiet. Signs can take a day or two to develop, so a pet who swallowed something yesterday and seems fine today is not necessarily clear.
Two categories are worse than the rest. String, thread, dental floss, tinsel and elastic hair ties can catch at one end and saw through the intestinal wall as the gut tries to move them along, which is why anything long and thin is treated as serious in cats especially. And anything that swells, such as fabric or foam, can turn a passable object into a blockage further down.
If you know your pet has swallowed something, phone rather than waiting for signs. Do not attempt to bring it back up at home, because with sharp, long or swelling objects that can cause more harm on the way up than it prevents. Our urgent care service can advise on whether your pet needs to be seen, and where an obstruction is confirmed our surgical services team handles it.
Practical management at home
Management is not a substitute for finding the cause, but it protects your pet while the work-up happens. Treat the house the way you would for a toddler: socks and laundry in closed hampers, hair ties and elastics off surfaces, sewing supplies and floss in drawers, small toys picked up, bins with secure lids, and cords tidied away.
Increase appropriate outlets at the same time. More sniffing time on walks does more for a bored dog than more distance. Food puzzles, scatter feeding and short training sessions give the brain something to do. For cats, vertical space, scratching posts and interactive play in short frequent bursts make a genuine difference in an apartment.
Teach a solid trade rather than a chase. Swapping the item for something better keeps the interaction calm and stops your pet learning to swallow quickly to keep their prize. Where a dog scavenges outdoors persistently, a properly introduced basket muzzle is a reasonable and humane tool. Our trail safety guide for Burnaby dogs covers outdoor scavenging, and our preventive care guide covers the routine screening that catches the medical drivers early.
When to book
Book an appointment if your pet repeatedly swallows non-food items, if the behaviour is new in an adult, if it has increased recently, or if it comes with weight changes, appetite changes, vomiting or diarrhoea. Treat it as urgent if you know something has been swallowed, or if there is repeated vomiting, abdominal pain, straining or lethargy.
Frequently asked questions
Why does my dog eat socks and underwear?
Fabric items carrying a strong scent of a favourite person are common targets, and the behaviour is often reinforced accidentally when a dog is chased for taking one. There can also be a medical driver, so a pet who does this repeatedly should be examined rather than simply managed. The specific item they choose is useful information to bring along.
Is pica caused by a nutritional deficiency?
Usually not in a pet eating a complete, balanced diet, though it is a reasonable thing to check. Conditions that impair absorption or cause anaemia can produce the behaviour even when the diet itself is appropriate, which is why bloodwork is part of the assessment. How and how often a pet is fed can also affect it, separately from what is in the food.
My cat chews wool blankets. Should I worry?
Yes, it is worth addressing. Wool sucking and fabric chewing are recognised in cats, more often reported in some oriental breeds, and while it may look harmless the risk is that chewing progresses to swallowing. Fabric can cause an obstruction, so have your cat examined and remove access to the items they target in the meantime.
How do I know if a swallowed object has caused a blockage?
The signs to watch for are repeated vomiting, especially on an empty stomach, refusing food, a tense or painful abdomen, restlessness, straining without producing stool, and increasing lethargy. These can take a day or two to appear, so a pet who seems fine shortly after swallowing something is not necessarily in the clear. If you know something was swallowed, call rather than wait.
Will my pet grow out of it?
Some puppies and kittens do, as teething passes and impulse control develops. Many do not, and treating it as a phase risks an obstruction in the meantime. A pattern that persists past adolescence, or one that appears for the first time in an adult, should be investigated rather than waited out.
Should I make my dog vomit if I see them swallow something?
No, not at home. With sharp, long or swelling objects, bringing something back up can cause more damage on the way out than leaving it in place, and the safe decision depends on what was swallowed and when. Phone for advice straight away, describe the object and the timing, and follow the guidance you are given.