Vomiting and diarrhoea are some of the most common symptoms that bring pets through our doors. While it’s not uncommon if your cat or dog is being sick or having loose stools, these signs can also indicate a more urgent problem that requires attention soon, if not urgently.
Understanding when to monitor at home and when to seek help can help you make informed choices about your pet’s health.
Common Causes of Vomiting and Diarrhoea in Pets
In many cases, vomiting and diarrhoea are caused by relatively minor issues, such as:
- Eating something unusual or off the ground
- Sudden changes in diet
- Mild viral or bacterial infections
- Stress or anxiety
- Minor gastrointestinal upset from treats or table scraps
In these cases, most pets recover quickly with rest, hydration and careful feeding. However, symptoms that persist, worsen or are accompanied by other signs may indicate a serious problem.
Diarrhoea and Vomiting in Dogs and Cats: When to Worry
Certain symptoms always warrant veterinary assessment. Call your emergency vet immediately if your pet shows any of the following:
- Vomiting or diarrhoea lasting more than 24 hours
- Blood in vomit or stools
- Repeated or projectile vomiting
- Signs of dehydration, such as sunken eyes, dry gums and lethargy
- Collapse, weakness or disorientation
- Abdominal bloating or pain
We recommend contacting us if any one of these signs are present. Early intervention is very often the key to preventing complications.
High-Risk Situations for Puppies, Kittens and Older Pets
Very young or elderly animals are more vulnerable to dehydration and rapid deterioration. Puppies and kittens can become seriously unwell in hours, particularly if they are unvaccinated or exposed to infectious diseases like parvovirus. Older pets or those with chronic illnesses may struggle to recover from even mild gastrointestinal upset, so extra vigilance is essential.
When Vomiting or Diarrhoea Means an Immediate Emergency
In some cases, vomiting or diarrhoea is a medical emergency. Seek immediate veterinary care if your pet:
- Has ingested a known toxin (chocolate, grapes, xylitol, chemicals)
- May have swallowed a foreign object or toy that could cause obstruction
- Shows signs of bloat (swollen abdomen, retching without producing anything)
- Displays severe lethargy, collapse or repeated vomiting
- Is a young puppy or kitten with persistent diarrhoea or vomiting
Prompt treatment can prevent dehydration, organ damage or life-threatening complications.
How a Vet Diagnoses the Cause
During your consultation, one of our vets will assess your pet’s condition using a number of approaches, depending on the nature and severity of the symptoms. This will start with taking information about what they ate or may have ingested and when the symptoms first became apparent. The vet will then carry out a physical examination of your pet.
This may be followed by blood tests to check organ function and hydration; faecal tests for parasites or infection, and imaging, such as x-rays or ultrasound, if a foreign body or obstruction is suspected. This approach helps ensure treatment is tailored to the underlying cause.
Treatment Options and What to Expect at a 24-Hour Practice
Treatment varies depending on severity. Mild cases may only require supportive care, such as fluids and anti-nausea medication. More severe cases could involve:
- Intravenous fluids for dehydration
- Medications to control vomiting or diarrhoea
- Hospital monitoring for changes in vital signs
- Surgery if a blockage or foreign object is detected
A 24-hour veterinary practice can provide continuous care, giving pets the best chance of a full recovery, regardless of the time of day.
Keeping Your Pet Safe With 24 Hour Vetcare
Vomiting and diarrhoea can sometimes resolve themselves on their own, but at the same time pets can deteriorate quickly, especially when toxins, blockages or severe infections are involved. Monitoring your pet closely, making a note of any changes, and seeking veterinary advice at the first sign of concern are the best ways to protect their health.
Our 24-hour veterinary team is always ready to provide expert assessment, care, and emergency advice, giving you peace of mind no matter when an emergency arises.
If you have any doubts about your pets health, get in touch with our 24 Hour team at 24 Hour Vetcare. With a group of 24-hour vet practices, we offer emergency pet care to owners across the country.
