Dogs and cats explore their environment with their mouths, and for many pets this curiosity occasionally leads to swallowing objects that were never meant to be eaten. These are often ordinary items found around the home, garden, or during play. Veterinarians refer to swallowed objects as foreign bodies. Some pass through the digestive system without causing harm, while others become lodged, cause pain or obstruction, or lead to serious complications if not addressed. Understanding the risks and knowing when veterinary assessment is needed helps owners act early and avoid worse outcomes.
Most swallowed objects are familiar household or pet items rather than unusual or obviously dangerous objects. Dogs commonly swallow toys or parts of toys, particularly soft rubber toys, rope toys, fabric toys, and squeakers, as well as corn cobs, bones or bone fragments, socks, underwear, towels, dental chews swallowed whole, food wrappers, and even stones. Cats are less likely to swallow large objects but are particularly at risk with string-like items such as thread, ribbon, wool, hair ties, and tinsel, which can be swallowed during play or grooming and behave differently inside the digestive tract.
Once swallowed, an object can cause harm depending on its size, shape, and location within the body. Some objects become lodged in the stomach or intestines and prevent food and fluid from passing normally, while others irritate or damage the lining of the digestive tract. Sharp or rigid objects can tear the stomach or intestines, allowing contents to leak into the abdomen, and string-like objects can anchor in one place while the intestines bunch up around them, causing significant internal injury. These problems do not always appear immediately and may worsen gradually over time.
The signs of a swallowed object vary and are not always dramatic, particularly in the early stages. Vomiting or repeated retching, reduced appetite, lethargy, abdominal discomfort, restlessness, or a hunched posture are common, along with drooling, gagging, or repeated swallowing. Changes in bowel movements such as diarrhea, constipation, or straining may occur, and in cats early signs can be subtle, including hiding, reduced grooming, or behavioral changes before obvious vomiting develops.
Some situations are more concerning even if a pet appears relatively well initially. String, ribbon, thread, and tinsel carry a high risk of internal injury, particularly in cats, while corn cobs, bones, and sharp fragments are unlikely to pass safely. Large toys or chews, multiple objects swallowed together, and objects swallowed by puppies, kittens, or small pets also warrant early veterinary advice, as complications are more likely and can progress quickly.
Although it is natural to want to act immediately, some responses can make the situation worse. Vomiting should not be induced unless specifically advised by a veterinarian, visible string should never be pulled from the mouth or anus, and feeding bulky food to try to push an object through can increase the risk of obstruction or tearing. Human medications for pain or nausea should not be given, as they can cause harm and mask important signs.
Veterinary assessment depends on your pet’s signs, history, and physical examination findings. This may include careful abdominal examination, imaging such as X-rays or ultrasound to identify or locate the object, and sometimes blood tests to assess hydration, inflammation, or organ impact. Some objects can be monitored safely with guidance, while others require removal using a camera passed into the stomach or surgery, with earlier diagnosis often allowing less invasive treatment and a smoother recovery.
Some small, smooth objects do pass naturally through the digestive tract, but there is no reliable way to determine this safely at home. Waiting without veterinary input carries risk, particularly if vomiting occurs, appetite decreases, pain or lethargy develops, or signs persist beyond a day. When uncertainty exists, assessment is safer than waiting to see if signs resolve on their own.
Not all cases are preventable, but simple precautions can reduce risk. Choosing toys and chews appropriate to your pet’s size, supervising play and chewing, avoiding bones and hard fragments, keeping laundry and food waste out of reach, and ensuring cats do not have access to string-like items all help lower the likelihood of ingestion, particularly in young pets and known scavengers.
Veterinary advice should be sought promptly if you see or strongly suspect that your pet has swallowed something, if vomiting occurs more than once, if food or water cannot be kept down, or if behaviour changes are noticeable or worsening. Situations involving string-like objects or corn cobs should always be discussed early, even if your pet appears settled.
Reviewed by Dr Ebeneze Spamers, Lead Veterinarian at Takurua Vets (NZVC-registered).
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