Updated October 31, 2026. Fact-checked against veterinary sources; review by a licensed veterinarian is in progress. See our editorial policy.
Dogs can vomit or have loose stool for many reasons, and not every episode is an emergency. But a dog that is unproductive-retching with a swollen abdomen, collapsing or repeatedly vomiting while becoming weak needs immediate veterinary help. Certain abdominal emergencies can worsen rapidly.
Recognize possible bloat
Gastric dilatation-volvulus, commonly called GDV or bloat, is a life-threatening condition in which the stomach becomes distended and can twist. Warning signs include repeated attempts to vomit with little produced, restlessness, drooling, a painful swollen belly and worsening weakness. It is especially associated with large, deep-chested breeds but is not limited to them. Go to an emergency veterinary hospital immediately if you suspect GDV.
Other red flags
Repeated vomiting, inability to keep water down, significant blood in vomit or stool, black tarry stool, a painful abdomen, pale gums or collapse can signal serious illness. Suspected swallowed objects or poisoning also require prompt guidance even before symptoms appear. Unvaccinated puppies with vomiting and diarrhea should be assessed promptly because infections such as parvovirus can cause severe dehydration.
Can you give food or fluids at home?
Do not force food, water or medicines into an actively vomiting or weak dog. Do not induce vomiting for a suspected toxin unless an animal poison professional directs you; it can be dangerous with some substances. For a dog with mild, isolated loose stool who remains bright and comfortable, your veterinarian can advise whether monitoring is reasonable. High-risk dogs need a lower threshold for evaluation.
What will the veterinarian check?
Depending on the signs, the clinic may assess hydration, circulation and abdominal pain, check bloodwork and recommend imaging or infectious disease tests. Treatment ranges from fluid support to emergency surgery, so an accurate diagnosis matters more than a home remedy.
See poisoning warnings in dogs and ways to reduce common stomach upsets.
Veterinary references
This article is for general education and is not a substitute for care from your own veterinarian. Learn about The Pet Vet and our editorial policy.