Dogs can get norovirus, but it appears to be uncommon and usually causes milder illness in dogs than in people. There is some evidence that norovirus can occasionally pass between humans and dogs, but confirmed cross-species cases are rare, and good hygiene greatly lowers the risk.

Quick Scoop

  • Dogs can be infected with norovirus and can spread it to other dogs, especially in close quarters like kennels or shelters.
  • Documented human-to-dog transmission exists, but it is considered rare, and routine household contact does not usually lead to infection.
  • Most affected dogs show signs of gastroenteritis (vomiting, diarrhea, lethargy), but many cases are mild and self-limiting with proper care.

Symptoms to Watch For

If a dog does get norovirus or a similar stomach bug, signs often look like a generic “tummy bug”:

  • Sudden vomiting and/or watery diarrhea
  • Reduced appetite and low energy
  • Possible mild fever and abdominal discomfort

These signs overlap with many other canine illnesses (parvovirus, parasites, dietary indiscretion), so a vet check is important if symptoms are severe, prolonged, or in a very young, elderly, or already ill dog.

Can Dogs Catch It From Humans?

  • Studies have found norovirus genetic material or antibodies in some pet dogs living in homes where people were sick, suggesting occasional human-to-dog spread.
  • These events appear rare, and most sick owners do not infect their dogs, even with close contact.
  • When it does happen, it’s usually with very close indoor contact and sometimes in dogs with weaker immune systems, such as puppies.

If someone in the home has norovirus, vets generally advise:

  • Extra handwashing after bathroom use and before handling food or the dog’s bowls
  • Avoiding face licking and sharing food while the person is actively sick
  • Cleaning up human and pet vomit/diarrhea promptly with disinfectant effective against norovirus where possible

Can Humans Get It From Dogs?

  • Evidence suggests dogs are theoretically susceptible to human norovirus and can occasionally carry related strains, but proven dog‑to‑human transmission appears extremely rare.
  • Human norovirus outbreaks are still overwhelmingly driven by person‑to‑person spread and contaminated food/water, not pets.

Good hygiene around any vomiting/diarrhea (gloves, disinfecting, washing hands) is still advised because dogs can carry other germs that cause stomach upsets in people.

What To Do If Your Dog Is Sick

If your dog suddenly develops vomiting or diarrhea:

  1. Call your vet , especially if:
    • A puppy, senior dog, pregnant dog, or dog with other health issues
    • There is blood in stool or vomit, repeated vomiting, or marked lethargy
  2. Offer small amounts of water frequently to reduce dehydration, and follow your vet’s advice on bland food or fasting.
  3. Isolate from other dogs (no daycare, park, or boarding) until your vet says it’s safe, since many stomach viruses are highly contagious between dogs.

If a human in the home has “stomach flu” at the same time, mention this to your vet so they can consider norovirus exposure among other causes.

Information gathered from public forums or data available on the internet and portrayed here.