A concerned pet owner comforting a dog showing signs of vomiting and diarrhea, highlighting symptoms of canine gastrointestinal issues.

Vomiting and diarrhoea in dogs

Pet HealthPublished Jul 7, 2025Updated Oct 20, 2025
Dial A VetBy Dial A Vet

Discover the causes, symptoms, and treatments for vomiting and diarrhea in dogs. Learn how to care for your furry friend and when to seek veterinary help!

When your dog starts vomiting or having diarrhoea, it can be alarming and leave you wondering what went wrong. These symptoms are common but can indicate anything from a mild upset stomach to a more serious health issue. Knowing how to respond quickly and appropriately can make a big difference in your dog’s recovery.

⚠️ What to Watch For

Vomiting and diarrhoea can vary in severity and frequency, so it’s important to monitor your dog closely for changes. While occasional stomach upset is normal, persistent or severe symptoms could indicate a deeper problem.

Key signs to look out for include:

  • Repeated vomiting or diarrhoea lasting more than 24 hours
  • Blood in vomit or stools (red or black, tarry appearance)
  • Lethargy, weakness, or signs of dehydration (e.g., dry gums, sunken eyes)
  • Loss of appetite or refusal to drink water
  • Abdominal pain (e.g., whining, hunching, or reluctance to move)

If your dog shows any of these symptoms, it’s important to take action promptly.

🔍 Possible Causes

Vomiting and diarrhoea can stem from a wide range of causes, some of which are minor while others may require urgent veterinary attention. Here are some common culprits:

  • Dietary indiscretion (eating spoiled food, garbage, or something toxic)
  • Sudden changes in diet or food intolerance
  • Parasites like worms or Giardia
  • Bacterial or viral infections (e.g., parvovirus)
  • Chronic conditions such as inflammatory bowel disease (IBD)
  • Foreign objects causing blockages (e.g., toys, bones)
  • Exposure to toxins like household cleaners or certain plants
  • Serious illnesses such as pancreatitis, kidney disease, or cancer

Identifying the underlying cause is crucial for determining the right treatment. A veterinarian may recommend tests such as stool analysis, bloodwork, or imaging to pinpoint the issue.

✅ What You Can Do at Home

For mild cases of vomiting or diarrhoea, you can take steps at home to help your dog feel better. Here’s what to do:

  • Withhold food: Give your dog’s stomach a rest by fasting them for 12–24 hours (for adult dogs only; puppies should not be fasted without veterinary advice).
  • Encourage hydration: Ensure your dog has access to fresh water to prevent dehydration. You can also offer a small amount of unflavoured electrolyte solution.
  • Introduce a bland diet: After the fasting period, feed small, frequent meals of boiled chicken and white rice or plain canned pumpkin. Gradually transition back to their regular food over a few days.
  • Monitor symptoms: Keep an eye on your dog’s behaviour, stool consistency, and any changes in vomiting frequency.

These measures are effective for mild cases, but they’re not a substitute for professional care if symptoms persist or worsen.

💡 When to Call a Vet

Some situations require immediate veterinary attention. Contact your vet or an online veterinary service like Dial A Vet if you notice:

  • Vomiting or diarrhoea with blood
  • Severe lethargy or inability to stand
  • Vomiting or diarrhoea in a puppy, senior dog, or a dog with underlying health conditions
  • Signs of poisoning (e.g., seizures, drooling, or difficulty breathing)
  • Persistent symptoms lasting more than 24–48 hours

Early intervention can prevent complications and help your dog recover faster. Don’t hesitate to seek help if you’re unsure about your dog’s condition.

FAQs

Q: What should I feed my dog after vomiting or diarrhoea?
A: Start with a bland diet such as boiled chicken and white rice or plain canned pumpkin. Feed small, frequent meals and gradually reintroduce their regular food over a few days.

Q: Can stress cause vomiting or diarrhoea in dogs?
A: Yes, stress can upset a dog’s digestive system, leading to symptoms like vomiting or diarrhoea. Try to identify and minimize stressors in your dog’s environment.

Q: How do I know if my dog is dehydrated?
A: Signs of dehydration include dry gums, sunken eyes, lethargy, and skin that doesn’t bounce back quickly when pinched. Ensure your dog has access to water and seek veterinary advice if dehydration is suspected.

Book a $49 online vet consultation at https://www.dialavet.com for fast, expert advice.

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