A dog with a wary expression looking at sourdough bread, showing they are harmful to dogs.

Can Dogs Eat Sourdough Bread?

No, dogs should not eat sourdough bread. While the bread itself might not seem harmful, the fermentation process and ingredients can cause significant health issues for your furry friend.

Did You Know?

The fermentation in sourdough bread increases its acidity, which can upset a dog's stomach.

Sourdough Bread



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Feeding Frequency


Allergic Risk


Why is Sourdough Bread Bad for Dogs?

Sourdough bread contains yeast, which continues to ferment even after being eaten. This can lead to alcohol toxicosis in dogs, causing symptoms like vomiting and difficulty breathing. Additionally, the dough can expand in the stomach, leading to dangerous bloating and potential gastric torsion.

How Much Sourdough Bread Can Dogs Eat?

It's best to avoid giving any sourdough bread to your dog. If your pup accidentally consumes a small piece, monitor them closely for any signs of distress and contact your vet if symptoms arise. There's no safe amount for regular consumption.

Similar Harmful Products

Watch out for other yeasty or bready items in your kitchen that can pose similar risks to your dog. These include:

  • Raw dough: Contains active yeast which can expand and cause serious health problems.
  • Rye bread: Also made with yeast and can cause stomach issues.
  • Bread containing nuts or raisins: Both are toxic to dogs and can lead to severe health problems.

What to Do If Your Dog Eats Sourdough Bread?

If your dog eats sourdough bread, call your vet immediately for advice. They may recommend bringing your dog in for an examination or monitoring specific symptoms. Avoid inducing vomiting unless instructed by a professional.

Long-term, consumption of sourdough bread can lead to severe gastrointestinal issues and even toxicity. Treatment costs can be significant, and considering pet insurance can help manage these expenses, offering peace of mind.

What are Healthy Alternatives?

If you want to share a treat with your dog, consider these healthier and safer options:

  • Carrot sticks: Crunchy and nutritious.
  • Apple slices: Remove the seeds and core for a healthy snack.
  • Blueberries: Antioxidant-rich and delicious.


In a nutshell, sourdough bread is a no-go for dogs. The risks far outweigh any possible benefit. Always consult with your vet for personalized advice, especially if your dog has specific health conditions or dietary needs.