Dog vomiting: when should you call the vet?

Look at how your dog is behaving, as well as the vomit.

The answer in 2 lines. A normally healthy adult dog that is sick once and otherwise seems completely well may be monitored closely. Contact a vet promptly for repeated vomiting, blood, pain, unusual tiredness or inability to keep water down. A swollen abdomen with repeated unsuccessful retching, collapse or breathing difficulty needs immediate veterinary help. Suspected poisoning or swallowing an object also warrants an urgent call. Puppies and dogs with existing health problems need advice sooner: do not apply an adult dog's home-care plan automatically.

What to do first

Watch your dog: check their breathing, alertness, ability to stand and whether their abdomen looks swollen. Do not keep pressing a painful belly.
Record when the vomiting started, whether it is recurring and whether there is diarrhoea. Take a photograph if this will not delay urgent care.
Look for possible exposure to medicines, household chemicals, unsuitable food or damaged toys. Keep relevant packaging and tell the vet what might be missing.
Call your usual veterinary practice for advice. Explain any existing illness, current medicine and whether your dog can keep water down.

Stop: danger

Swollen belly and unsuccessful retching, collapse or difficulty breathing: contact an emergency veterinary service immediately and follow its instructions for bringing your dog in.
Possible poisoning or swallowed object: call urgently even if your dog currently looks well. Do not try to make them vomit or give human medicines.

Signs that need prompt veterinary advice

Repeated sickness, blood in vomit, bloody diarrhoea, marked weakness or abdominal pain are reasons to call. Dehydration can also develop, particularly if your dog cannot retain water. Do not wait for every warning sign to appear.

The PDSA vomiting guide has a section called 'When to contact your vet'. Use it to describe accompanying symptoms during your call. A photograph or colour description cannot establish the cause by itself.

When close monitoring may be reasonable

If a healthy adult dog has been sick once and remains bright, comfortable and otherwise normal, careful observation may be appropriate. Keep fresh water available and encourage small, frequent drinks rather than a large amount at once. Let your dog rest.

Ask your vet what to feed and whether any meal should be missed, particularly if your dog is young, elderly or has a medical condition. Avoid rich food and treats. The Blue Cross sick-dog guide distinguishes care for a bright adult from cases needing veterinary attention; read that distinction before following its feeding suggestions.

What not to do

Giving salt water, oil or another home remedy to induce vomiting.
Using leftover veterinary medicine or a human painkiller without the vet's agreement.
Waiting because your dog briefly perks up between repeated bouts of sickness.
Forcing food or water into the mouth of a weak or distressed dog.

Why the cause matters

Vomiting can follow a minor stomach upset, but it can also accompany an intestinal blockage, poisoning, infection or another illness. Food coming back up without obvious abdominal effort may be regurgitation rather than vomiting. Describe what happened instead of trying to label it yourself.

The Dogs Trust guide to when veterinary help is needed covers sickness alongside other changes in behaviour and health. Use it to check what else to mention, including appetite, drinking and energy levels.

Finding help in England

Call your usual practice first, including when it is closed, and check its recorded message or website for emergency arrangements. Confirm where you should go before travelling: the emergency service may be at a different address.

If you need to locate a practice, use the Royal College of Veterinary Surgeons' Find a Vet tool: select practices by location, enter your town or postcode, then telephone the practice to confirm availability. The directory currently warns that some information may be temporarily unavailable. Ask about likely charges and explain financial concerns when calling, without delaying emergency assessment.

Good to know

Puppies with vomiting need veterinary advice; they should not simply follow home-care instructions intended for healthy adults.
If monitoring at home, call when sickness returns, another symptom develops or your dog becomes less well. There is no guaranteed safe waiting period.
Veterinary emergency help is separate from NHS services. The same animal warning signs apply across the UK, although local arrangements differ.

Illustrative example: in Bristol, Sam's dog brings up food and then repeatedly tries to be sick without producing anything. His abdomen looks enlarged. Sam calls the emergency veterinary service and follows its instruction to come straight in, taking details of the dog's medicines. Sam does not wait to see whether another meal settles his stomach.

A made-up story, for illustration.

Bobby

Sources, verification, confidence

Verified on 5 November 2026, for England. Confidence: high for the emergency warning signs, supported by UK veterinary charities; medium for suitability of home monitoring, which depends on the individual dog. This guide cannot diagnose the cause or prescribe treatment.