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Can Dogs Eat Soy Sauce?

If you’re like most dog owners, the health and well-being of your pet is paramount. Providing a nutritious diet is a key component to ensuring their vitality and happiness. However, with so many ingredients out there, it’s natural to question which ones are safe and beneficial for our furry friends. Soy, for instance, might raise a few eyebrows. Is it suitable for dogs? And what about derivatives like soy sauce? Some consider it a healthful addition, while others advise against it. Let’s delve into the topic to determine if dogs can eat soy sauce or is it potentially dangerous for their health?

A white triangular small bowl of soy sauce and chopsticks on a wooden table.
Photo credit: YayImages.

What is soy sauce made of?

Soy sauce is a result of the fermentation process of soybeans and wheat. Its basic ingredients include soybeans, water and salt. The main reason for its distinct taste is the high sodium content, resulting from the amount of salt used during production.

While a small quantity might seem harmless, the amount of salt, when measured, can be alarming. A single tablespoon of soy sauce can contain up to 1,000 milligrams of sodium, making even a teaspoon of soy sauce a salty overload for our canine friends.

There are various types of soy sauce available in the market, each with its unique flavor profile and sodium content. From light to dark soy sauce, tamari to shoyu, each variety might differ in its ingredients and salt concentration.

However, regardless of the type, soy sauce and its high sodium content remain unsuitable for dogs.

Can dogs consume soy sauce?

The short answer is no. Due to its high sodium content, even a small amount can be too much and have severe repercussions on a dog’s health. Dogs have a different digestive system from humans and while we can handle certain human foods, our furry friends might not process them the same way.

For pet owners, knowledge is power. By understanding the constituents of human foods and condiments, they can make informed decisions about what to share with their pets. While certain dairy products in moderation or specific soy foods can be harmless or even beneficial, the line should be drawn at soy sauce.

A person feeding a dog a bone shaped food bowl.
Photo credit: YayImages.

Why salt is a problem for dogs

Dogs need a certain amount of salt in their diet, just like humans do. However, high amounts of sodium, like what you find in soy sauce, can cause serious health issues such as hypernatremia.

In large amounts, the excessive sodium disrupts a dog’s system, leading to sodium poisoning. Some of the common symptoms of salt poisoning include: excessive thirst, urination, diarrhea, vomiting, abdominal pain, excessive drooling and neurological issues, including seizures.

As cited in an article published on WebMD, one tablespoon of soy sauce can contain up to and around 900-1,000 mg of sodium. When you consider that some dogs’ entire daily sodium intake should be around 100 mg, you realize just how potent this condiment is in either small or large quantities. Giving a dog soy sauce, even in minimal amounts, can overshoot their sodium intake significantly.

If you ever suspect your dog ate soy sauce, especially in an excessive amount, the first thing to do is watch out for the above symptoms. If you witness the above symptoms or any unusual behavior, it’s crucial to contact your vet immediately. It’s not just the immediate symptoms of soy sauce consumption that are concerning; there are potential long-term side effects that dog owners should be aware of, especially if their pets get their paws on soy sauce more than once.

It’s also pertinent for pet owners to be aware of the specific needs of their dogs based on the dog’s age. For instance, puppies and older dogs might be more susceptible to the harmful effects of excess sodium.

Risks of soy sauce consumption for dogs

  1. High sodium content: A large amount of soy sauce contains so much sodium that it can be lethal for small dogs. While adult dogs might handle a small amount better, the risk remains significant. Ingesting high levels of sodium can lead to neurological issues and even heart damage in severe cases. Every dog, depending on its age, breed, size, and activity level, has a recommended sodium intake. A dog’s diet should be balanced to ensure they receive the right amount of essential nutrients, including sodium. However, introducing human foods, especially those high in salt, like soy sauce, can quickly tip the balance.

    It’s crucial for dog owners to be aware of how much sodium their pets are getting, not just from potential table scraps or accidental ingestions but also from their regular dog food. Some dog foods might have higher sodium content than others, and if your pet is already on a high-sodium diet, even a small amount of soy sauce can be particularly harmful.
  2. Allergic reactions: Some dogs might also have allergic reactions to soy products. Symptoms can range from mild digestive issues to more severe cases of anaphylaxis.
  3. Other ingredients: Besides the soy, Chinese takeout, dishes that contain soy sauce or packaged foods like seaweed snacks might also have onions, garlic and other ingredients that are harmful to dogs, like onion poisoning or gastrointestinal upset. This also applies to potato chips and why we advise against sharing those with your pet as well.
  4. Weight-related issues: Just as in humans, excess salt in a dog’s diet can lead to weight gain. While a dog’s weight might not shoot up after a one-time soy sauce incident, frequent exposure to high-sodium foods can cause water retention. This retention is because the body tries to balance out the sodium intake by conserving more water. Over time, this can lead to visible weight gain and the associated health issues that come with it, like joint problems and cardiovascular concerns.
  5. Chronic kidney damage:
    The kidneys are responsible for filtering out waste from the blood, including excess sodium. When a dog consumes too much salt, the kidneys have to work overtime to filter out the excess sodium. Over time, this increased workload can lead to chronic kidney damage. Dogs might not show symptoms of kidney failure immediately, but over time, as the kidneys wear down, symptoms like frequent urination, lethargy and loss of appetite might become evident.
  6. Hypertension:
    The sodium in salt is a well-known factor in raising blood pressure. While one instance of soy sauce consumption might not cause chronic hypertension, regular excess salt intake can. High blood pressure in dogs, just as in humans, can lead to various health problems, including heart disease and stroke.
  7. Electrolyte imbalance:
    Salt is a significant component in the body’s electrolyte balance. Too much sodium from sources like soy sauce can disrupt this balance, leading to a condition called hypernatremia. Symptoms include extreme thirst, confusion, seizures and even coma in severe cases.
Small glass with soy sauce in it.
Photo credit: YayImages.

What if my dog accidentally ingests soy sauce?

If your dog has consumed an excessive amount of soy sauce, it is crucial to ensure they drink plenty of water. This can help dilute the sodium levels and prevent serious symptoms. If you observe signs of salt poisoning or any other serious symptoms, take your dog to the vet immediately. They might require intravenous fluids, blood transfusions or other treatments to stabilize their sodium levels.

Soy in Dogs’ Diet

Our dog’s food is formulated to cater to all the nutritional needs of a dog, keeping in mind the delicate balance of nutrients essential for their well-being. While many human foods can safely be shared with our pets, some, like soy sauce, can wreak havoc on a pet’s health. Soy sauce made of soybeans, wheat and a hefty amount of salt is a concoction that’s ill-suited for canine consumption.

Certain soy foods, in moderation, might be beneficial for dogs, providing protein and other essential nutrients. However, the good thing about soy stops when it comes to soy sauce because of its excess sodium.

While soy sauce isn’t recommended for dogs, some soy-based products like soy milk can be introduced into a dog’s diet in moderation. Soy products, excluding soy sauce, offer health benefits such as essential fatty acids and proteins. However, it’s always a good idea to introduce any new food, especially one with high salt content gradually, and under observation. 


Our pets often become a part of the family, and like all family members, we want the best for their health. While it might be tempting to treat your furry friend with table scraps or food items from your plate, it’s essential to know what’s beneficial and what’s harmful to them. As dog owners, we must be aware that our dog’s body processes food items differently.

Soy sauce, with its high sodium content, poses more risk than reward for our pets. Whether it’s a teaspoon of soy sauce or a tablespoon, the amount of salt can lead to several health problems, from kidney disease to more severe cases of organ failure.

The best approach is to avoid giving soy sauce and dishes containing it to our pets entirely. Dogs and their dietary needs differ vastly from ours. What’s a flavorful addition to our dishes might be detrimental to our furry friend.

With soy sauce, the risk isn’t just about an immediate reaction but potential long-term health repercussions due to the sodium onslaught. By keeping such items out of reach and continuously educating ourselves, we can ensure longevity and good health for our pets. While Asian cuisine may be delicious to our palates as humans, certain ingredients like soy sauce, should remain a human delicacy and not be shared with our canine companions.