Soybeans — the protein-rich substitute for chicken often favored by vegetarians — are considered very healthy for humans when eaten in moderation. Dogs also need protein in their diet, so it’s easy to assume that soybeans would be good for them too. The answer, however, is both yes and no. Your dog can eat soybeans, but there are a few important precautions to keep in mind.
Are Soy Beans Good for Your Dog?
Soybeans are packed with nutrients like manganese, omega-3 and omega-6 fatty acids, iron, phosphorus, copper, potassium, and magnesium. With such a rich and diverse nutritional profile, they can be beneficial for dogs much like they are for humans, when fed in moderation. Let’s take a closer look at what each of these nutrients does for your dog:
Proteins – Essential for repairing muscles and tissues, especially after injury or physical activity. The protein in soybeans supports muscle growth and recovery, while the potassium content helps improve nerve and muscle function.
Omega 3 and 6 Fatty acids – These fatty acids aid in brain development in puppies and have anti-inflammatory properties that can help manage arthritis. They also support heart, kidney, and overall immune health.
Potassium – Helps regulate electrical activity in the heart, nerves, and muscles, and can restore energy in dogs that seem weak or fatigued.
Phosphorous – Keeps bones and teeth strong while maintaining a healthy metabolism.
Manganese – Activates enzymes needed for metabolism and supports joint health.
Copper – Helps form red blood cells, supports iron absorption, and contributes to healthy skin and coat pigmentation.
Soybeans contain several other nutrients as well, making them something of a superfood for dogs. However, that doesn’t mean your dog should eat large amounts of them. As with most foods, moderation is key.
How Much Soybean Is Good for Your Dog?
Soy is already an ingredient in many commercial dog foods, so there’s a good chance your dog is eating some without you realizing it. Studies suggest that around 1 tablespoon per 10 pounds your dog weighs can be beneficial, but the right amount depends on the age, size and weight of your dog. Let’s break this down according to the breeds and sizes of the dogs.1
Extra-small dog (2-20 lbs.) = 5-10 grams of soy beans (1 tablespoon)
Examples: Yorkies, Chihuahuas, Pomeranians, Pugs
Small dog (21-30 lbs.) = 10-15 grams of soy beans (2 tablespoons)
Examples: Basenjis, Beagles, Miniature Australian Shepherds
Medium dog (31-50 lbs.) = 15-20 grams of soy beans (3 tablespoons)
Large dog (51-90 lbs.) = 30-25 grams of soy beans (4-5 tablespoons)
Examples: Pit Bulls, German Shepherds, Labrador Retrievers, Australian Shepherds
Extra-large dog (91+ lbs.) = 45-50 grams of soy beans (6-7 tablespoons)
Examples: Newfoundlands, Bernese Mountain Dogs, St. Bernards, Great Pyrenees
How to Feed Soybeans to Your Dog
Some dogs are allergic to soy, and many dog food allergies come from protein-rich foods. The most common allergens in dogs come from beef, eggs or dairy, and wheat.2 There are other precautions to take before introducing Soy Beans to your dog's diet.
Cooked Soy Beans – Never feed your dog raw soybeans. While not toxic, raw beans can carry bacteria and cause digestive upset.
Plain = No pain – Dogs can’t tolerate spicy, salty, or sweet foods. Always serve soybeans plain, without butter, salt, or seasoning.
Mix it up – Since soybeans aren’t very flavorful, mix them into your dog’s regular meal to make them easier to eat.
Test and then taste – Always start with a very small portion to see how your dog reacts. If there’s no sign of allergies or stomach issues, you can slowly increase the amount.
Remember, moderation is key. Don’t overfeed soybeans just because they’re healthy. More Soy Beans ≠ More Love.
What Can Happen if Your Dog Eats Too Many Soybeans?
If your dog manages to sneak extra soybeans, maybe while you’re getting ready for a date or binging a Netflix show, watch for these signs of an upset stomach -
Excessive licking
Hair loss
Bloating
Abdominal pain and tenderness
Gas
Conclusion
While research is still ongoing about whether soybeans are completely safe and beneficial for all dogs, current evidence suggests they’re healthy and safe for most, except for those with soy allergies.2 So feel free to add a few cooked soybeans to your dog’s bowl now and then. It’s a simple way to give a little boost to their health and immunity.
As Spot’s resident cat enthusiast, I am dedicated to researching and sharing information that helps pet owners take the best care of their pets. Pet ownership comes with it’s share of challenges, but my goal is to help make this journey easier.
*Jan 2019 to Aug 2024 Spot Pet Insurance Services, LLC claims data.
Mitchell, Sandra. "Can Dogs Eat Edamame?" PetMD, 03 Nov. 2023, https://www.petmd.com/dog/nutrition/can-dogs-eat-edamame.
Molier, Sarah-Jane. "Can Dogs Eat Soy?" The Vets, 29 Jul. 2022, https://thevets.com/blog/can-dogs-eat-soy/.
The information presented in this article is for educational and informational purposes only and does not constitute or substitute for the advice of your veterinarian.
