Canine parvovirus kills up to 91% of untreated dogs. It strikes fast, progresses aggressively, and disproportionately targets puppies and unvaccinated dogs. Yet with early detection and prompt veterinary care, survival rates rise dramatically. Knowing what to look for could save your dog's life.
What Is Canine Parvovirus?
CPV-2 is a highly contagious viral disease that attacks the gastrointestinal tract and immune system simultaneously. It spreads through direct contact with infected dogs or their faeces, and indirectly through contaminated surfaces, clothing, and soil. The virus can survive in the environment for up to one year.
Puppies under 6 months, unvaccinated dogs, recently adopted animals, and certain breeds — including Rottweilers, Dobermans, and Siberian Huskies — face significantly higher risk.
7 Early Warning Signs
- Sudden lethargy and weakness — A normally energetic dog becomes unusually quiet, still, or unresponsive
- Loss of appetite — Complete refusal of food, including favourite treats
- Severe, repeated vomiting — Forceful and frequent, sometimes containing bile or foam
- Bloody, foul-smelling diarrhoea — Often described as having a distinctively strong, sweet-metallic odour — one that experienced veterinarians recognise immediately
- Fever or dangerously low temperature — Normal range is 38–39.2°C; both extremes are concerning
- Abdominal pain and bloating — The dog may guard their belly, resist being touched, or adopt a hunched posture
- Signs of dehydration — Dry gums, sunken eyes, skin that doesn't spring back when gently pinched
Act Immediately — Do Not Wait
If your dog shows any combination of these signs — especially bloody diarrhoea and vomiting together — call your veterinarian immediately. Do not attempt to manage this at home. Do not wait to see if it improves. Isolate your dog from other dogs and bring their vaccination records to the appointment.
Prevention Is Everything
The DHPP vaccine is highly effective, affordable, and part of every standard puppy vaccination schedule. Puppies receive a series of vaccinations starting at 6–8 weeks, with boosters at regular intervals. Adult dogs require periodic boosters to maintain protection.
Until a puppy has completed their full vaccination series, limit their exposure to unknown dogs and avoid high-risk environments like dog parks and kennels.
Written by a veterinary medicine student. Always consult your veterinarian for personalised advice about your dog's health.