Dog vomiting — when to worry?
Answer these questions to help assess whether your dog's vomiting needs urgent attention. This is a triage guide, not a diagnosis — if in doubt, always call your vet.
✓ Reviewed against PDSA, Blue Cross, RVC, Battersea & Animal PoisonLine guidance · Last updated: 2026-09-04
1. How many times has your dog vomited?
2. Is there blood in the vomit?
3. How does your dog seem right now?
4. Is the abdomen swollen or hard?
5. Did your dog eat something it shouldn't have?
Common questions
When should I worry about my dog vomiting?
A single episode in an otherwise well, alert dog is often not urgent. Worry signs are: repeated or continuous vomiting, blood in the vomit, a swollen or hard abdomen, lethargy or collapse, or a known ingestion of something toxic. Any of those warrant a same-day or immediate vet call.
What if there is blood in my dog's vomit?
Small dark flecks can sometimes be from a minor irritation, but obvious red blood or dark, tarry material is a reason to call your vet promptly rather than wait and see.
Should I withhold food after my dog vomits?
For a single, mild episode, withholding food for 2-4 hours and then offering a small bland meal (plain chicken and rice) is standard advice. If vomiting continues or your dog seems unwell, call your vet instead of continuing to wait.
Important: This checker is a general triage guide, not veterinary advice. If you are uncertain or your dog's condition is worsening, call your vet immediately. ASPCA Animal Poison Control: (888) 426-4435. Pet Poison Helpline: (855) 764-7661.