Are Flax Seeds Safe for Dogs? Here’s What Experts Say

Pet parents today are more informed than ever: We check labels, read ingredient lists, and look for natural ways to keep our dogs healthy.  One supplement that has gotten a lot of attention lately is flaxseed.

You might have already noticed flaxseed listed in your dog’s kibble or seen other pet owners adding a spoonful of flax to their pup's dinner. It’s no wonder, as flaxseed is packed with fiber, omega-3s, and antioxidants. 

But is flaxseed actually safe for dogs? And if so, how should you serve it?

At Premium Gold, we’ve been growing flax for more than 100 years. Our golden flaxseed is naturally rich in omega-3 and other nutrients and trusted by families across the country, including those who want to support their pets with natural, food-based supplements.

In this article, we’ll walk you through the benefits of flax for dogs, how to safely feed it, when to avoid it, and how it compares to other trending super seeds like chia and hemp.

Can Dogs Eat Flax Seeds?

Yes, dogs can safely eat flax seeds, as long as they’re prepared and portioned correctly.

Flaxseed is even used in many commercial pet food formulas. The Association of American Feed Control Officials (AAFCO) does not restrict flaxseed in pet products, which means it’s recognized as safe when used properly.

That said, like any supplement, flaxseed should be introduced carefully and thoughtfully. It offers some impressive benefits for dogs, but also comes with a few important cautions (more on that below).

Nutritional Benefits of Flax for Dogs

Flaxseed is often considered a "super seed" for good reason. Here’s a look at what makes it great for dogs:

Omega-3s for Skin, Coat & Joints

Flaxseed is rich in alpha-linolenic acid (ALA), a plant-based omega-3 fatty acid that helps support:

• Shiny, healthy coats
• Reduced inflammation in joints
• Overall immune system health

Fiber for Healthy Digestion

Flax contains both soluble and insoluble fiber, which:

• Supports regular bowel movements
• Aids in healthy digestion
• May help with weight management

Lignans: Natural Antioxidants

Lignans are powerful plant compounds with antioxidant properties, and flaxseed is the #1 source of lignans in the plant world.

 

For most dogs, ground flaxseed offers the best overall benefits due to its digestibility and nutrient availability, but pet owners should always speak to their veterinarian to decide if flaxseed makes sense for their dog’s diet.

How to Safely Feed Flaxseed to Your Dog

1. Choose Ground Flaxseed

Dogs can’t easily digest whole flaxseeds, so they often pass through undigested. Ground flaxseed is a better option.

Our flax is milled using our True Cold Milled ™ process, which keeps nutrients intact and naturally extends shelf life. It’s human-grade and safe for pet use.

2. Start Small

Begin with a small amount to avoid upsetting your dog’s stomach.

Recommended daily flaxseed amounts:

• Small dogs (<20 lbs): ⅛ to ¼ tsp
• Medium dogs (20–50 lbs): ½ to 1 tsp
• Large dogs (50+ lbs): 1 to 2 tsp

Always mix it into your dog’s food and watch for any signs of sensitivity.

3. Talk to Your Vet

We always recommend checking with your veterinarian before starting any new supplement—especially if your dog has food allergies or digestive issues.

When Not to Give Flaxseed & Potential Risks

While flaxseed is generally safe, it’s not right for every dog.

Watch Out For:

• Allergies or food sensitivities
• Too much fiber (can lead to gas or diarrhea)
• Choking hazard with whole seeds (especially for small dogs)

If your dog shows signs like vomiting, itching, or digestive discomfort after eating flaxseed, stop immediately and contact your vet.

Flaxseed vs. Chia and Hemp for Dogs

Here’s a quick look at how flax compares to other popular seeds, specifically for dogs:

 

Flax is the most balanced option when it comes to fiber, omegas, and antioxidants, especially when it’s ground. 

Want to learn more? Check out our full guide: Chia vs Flax vs Hemp

FAQs: Flaxseed for Dogs

How much flaxseed should I give my dog? 

The right amount of flaxseed depends on your dog’s size. As a general guide: small dogs can start with ⅛ to ¼ teaspoon, medium dogs with ½ to 1 teaspoon, and large dogs with 1 to 2 teaspoons per day. Always start small and consult your veterinarian to find the ideal dosage for your pup’s needs.

 Can I sprinkle flaxseed on my dog’s food? 

Yes, you can sprinkle flaxseed on your dog’s food, but only if it’s ground. Whole flaxseeds are difficult for dogs to digest and often pass through the body without delivering any nutritional benefits. Ground flaxseed is easier to digest and allows your dog to absorb all the omega-3s, fiber, and antioxidants.

Is flaxseed or chia seed better for dogs? 

Both flax and chia seeds have their benefits for dogs, but flaxseed comes out ahead in terms of fiber and lignan content. While chia offers hydration and a bit more calcium, flax provides more balanced omega-3s and a stronger antioxidant profile, which is especially beneficial when you’re using cold-milled ground flax like Premium Gold’s. 

Will flaxseed help my dog poop? 

Yes, flaxseed can absolutely help your dog poop due to its high fiber content. The combination of soluble and insoluble fiber helps regulate digestion and supports regular, healthy bowel movements. It’s often used as a natural way to ease occasional constipation in dogs.

Why Choose Premium Gold Flaxseed for Your Dog

At Premium Gold, we’re not just another flax company. Our family has been farming and growing golden flaxseed since 1906. 

Wee launched Premium Gold to bring that farm-direct quality to customers across the country.

We use only golden flaxseed for its smoother taste and superior nutrition. Our flaxseed is:

• Non-GMO Project Verified and pesticide free
• Naturally high in omega-3s and fiber
• True ColdMilled for better nutrient retention and extended shelf life
• Human-grade and safe for pets

Whether you’re looking for whole flaxseed to grind fresh or ready-to-use ground flaxseed, we make it easy to support your dog’s health the natural way.

Shop Our Pet-Safe Ground Flaxseed Now

Have Questions? Contact Our Team of Flax Experts