No, dogs should not eat fermented eggs. Fermented eggs contain high salt content, which is unhealthy for dogs. Fermented egg recipes vary, so they may contain ingredients that are toxic to dogs, including garlic, onions, hot peppers, and other spices that can cause digestive issues.
Risks
Fermented eggs are typically made using yeast, bacteria, or mold to preserve eggs. Different recipes call for different starters. Some people use sweet cultures like kombucha, cultured cider vinegar, or kefir. Others use salty cultures like brine from a vegetable ferment, a homemade vegetable starter, or a store-bought starter. Most of these ingredients are not suitable for dogs to eat due to their sugar and salt content.
Salt-brined fermented eggs are not healthy for dogs due to the high salt content. They can cause digestive upset and even sodium poisoning when excessive amounts are consumed.
Fermented eggs may also contain other ingredients and flavorings that may be harmful to dogs when consumed in large amounts, including onion, garlic, chili pepper, and jalapenos.