Can canine coronavirus spread to other dogs?

Yes. Canine coronavirus spreads mainly through the faecal-oral route. Infected dogs should be isolated and their environment kept clean. Consult your vet before allowing contact with other dogs.

What tests are needed for canine coronavirus?

PCR testing of faecal samples or throat swabs is commonly used to confirm the virus, alongside blood work, electrolyte assessment, and imaging where necessary.

What home care can I provide?

Ensure your dog stays well hydrated and monitor urine output. Offer easily digestible food, record any symptom changes, and bring photos or videos to show your vet if needed.

What is the prognosis for a dog with canine coronavirus?

Most dogs with mild cases recover with supportive care, but puppies, senior dogs, and those with complications carry a higher risk. Follow-up based on your vet's assessment is recommended.

How much do the tests and treatment usually cost?

Costs vary by clinic and region — ask your vet for an estimate before proceeding.

Disease Guide

Canine Coronavirus Infection in Dogs: Symptoms, PCR Testing & Supportive Care [2025]

Canine coronavirus infection is usually mild, causing primarily gastrointestinal symptoms that typically resolve with supportive care.

Take 1 minute to check the symptoms first

Last updated: 2026/01/05

Pethealthmap editorial team

Sources: AVMA, WSAVA, National Taiwan University Veterinary Hospital

When to See a Vet

Seek immediate veterinary care (emergency)

•Rapid breathing with pronounced open-mouth panting that will not ease
•Persistent coma or brief loss of consciousness with no response to stimulation
•Inability to drink water or obvious dehydration with severe weakness

Schedule a clinic visit soon (within 24–72 hours)

•Markedly reduced appetite or not eating for more than a day
•Continuous vomiting or a significant increase in vomiting frequency
•Diarrhea with mucus or blood in the stool

01What symptoms indicate something is wrong?

Canine coronavirus mainly causes gastrointestinal symptoms, but behavioural and respiratory changes may also occur. Watch for signs of dehydration or worsening symptoms to decide whether a vet visit is needed.

Lethargy and noticeably reduced activity level
Reduced appetite or refusing food for more than 24 hours
Repeated vomiting or increasing frequency of vomiting
Diarrhoea, which may be mucoid or contain blood
Coughing or changes in breathing sounds and rate
Seek veterinary assessment promptly if symptoms persist or worsen

Seek emergency care immediately if you notice the following symptoms:

⚠️ Difficulty breathing, open-mouth breathing, or laboured panting
⚠️ Persistent collapse or brief loss of consciousness
⚠️ Unable to drink water or showing obvious signs of dehydration

02How to assess at home: key observations and criteria for seeking emergency care

Observing and recording key information at home helps your vet quickly assess the condition and arrange appropriate tests.

Note the onset time and details of how symptoms appeared and progressed
Track daily changes in food and water intake
Take photos or videos of vomit or diarrhoea for your vet's reference
Record vomiting frequency, stool frequency, and changes in stool consistency
Observe breathing rate and watch for open-mouth panting or difficulty breathing
Arrange a vet visit immediately if anything seems abnormal or symptoms continue to worsen

03How will the vet diagnose the condition? Common diagnostic tests

Examinations at the clinic aim to confirm the presence of the virus, assess dehydration and complications, and determine the appropriate care plan.

Physical examination

assessment of temperature, mucous membrane colour, and breathing

PCR viral genetic testing

to confirm the presence of the virus

Blood and biochemistry panel

to assess electrolytes and organ function

Urinalysis

to help evaluate dehydration or kidney status

X-ray or CT scan

to assess complications in the chest or abdomen

Referral to a specialist hospital for advanced imaging or specialist assessment if needed

04How to treat and care for your dog after diagnosis? Medications, dietary adjustments, and care guide

Supportive care is the mainstay of treatment, focusing on maintaining hydration and electrolyte balance, monitoring for secondary infections or serious symptoms, and scheduling follow-up visits.

Supportive therapy tailored to the condition, with assessment for concurrent bacterial infection
Intravenous fluid therapy and electrolyte monitoring at the clinic may be required if dehydration is present
Short-term dietary adjustment to easily digestible foods, offered in small, frequent meals
Schedule follow-up visits, blood tests, or imaging as directed by your vet
Isolate your dog at home to prevent transmission to other dogs
Seek emergency care or a referral promptly if symptoms do not improve or worsen

05What to prepare before seeing the vet: key information to help your vet quickly identify the cause

Record the start time of symptoms and how they have progressed

List food, water, and bowel movement records for the past 24–72 hours

Bring photos or videos of vomit or stools (helpful for assessment)

Prepare a list of all current medications and supplements for your vet

Bring any previous test reports or imaging to the appointment

If PCR testing or advanced imaging may be needed, call ahead to book at the appropriate clinic

This content is for reference only and cannot replace a professional veterinary diagnosis. If your pet shows signs of illness, please seek veterinary care promptly.