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10 Best Fish Oils For Dogs 2021: Reviews & Buyer’s Guide

Fish oil is one of the easiest add-ons to your dog’s food diet. Fish oil improves the heart health of your canine companion, encourages a silky coat, prevents itchy, flaky skin, and soothes allergies and joint pain. This can also make their immune system stronger and help them fight cancer.

That is because fish oil contains omega-3 fatty acids, an essential healthy fat that helps the body and brain of your dog. Unlike humans, dogs are unable to produce omega-3 fatty acids on their own and have to get them from their diet. Whether you make fish oil a part of the dietary routine for your dog, here’s what you need to know.

As a health-conscious pet parent you want to give your best. Most of us are well aware of the many benefits that fish oil has for humans, but did you know that these benefits apply to your furry friends, too?

Fish oil is one of the most common supplements to a healthy diet for both humans and canines. An excellent source of omega-3 fatty acids, it is obtained from marine animals such as tuna, salmon, mullet, and anchovies. Docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA) present within these fatty acids are directly responsible for many of these benefits.

american eskimo dog white best fish oils for dogs
american eskimo dog

10 Best Fish Oils For Dogs

1. Purina Pro Plan

Purina Pro Plan Best Fish Oil For Dog

Provide advance care for your dog with FortiFlora Canine Probiotic Supplement Veterinary Diets Purina Pro Program. Formulated for diarrhoeal dog dietary management, this safe and effective probiotic dog supplement is easy to administer by adding the powder to your dog’s regular food .

FortiFlora can help to support the digestive health of your dog. Every package contains a guaranteed amount of living microorganisms that help promote beneficial microflora in the intestines.

Our patented microencapsulation process helps improve the microorganisms’ stability and survival before they enter your dog’s intestinal tract, so your dog gets the maximum benefit of each serving. The recipe includes antioxidants and promotes the immune function of your dog too.

FortiFlora for dogs also helps to reduce gas in dogs and promote digestive health for your dog. FortiFlora Canine Probiotic Supplement, which is appropriate for administration to both puppies and adult dogs, should be used as instructed by your dog’s veterinarian.

2. Zesty Paws

Zesty Paws

Zesty Paws products are formulated after extensive research to ensure that they are beneficial for your pet. As pet nutrition science evolves to come up with new solutions, Zesty Paws is committed to bringing you these breakthroughs with one important goal in mind- keeping your pet as healthy as the bond they share with you.


  • This Salmon Oil additive is filled with Omega fatty acids that improve your furry friend’s hair,and give them soft and healthy-looking skin.
  • If your pet’s coat has a dull and brittle look, Salmon Oil will benefit them sleeker and shinier fur.
  • The Wild Alaskan Salmon Oil from Zesty Paws promotes healthy cardiovascular function and facilitates a healthy response of the immune system.
  • The naturally occurring omega fatty acids in Wild Alaskan Salmon Oil will encourage overall hip and joint health to keep the spring in their step.
  • This luxury liquid fish oil solution is fortified with the safe fatty acid omega-3 (both EPA and DHA) to help your companion’s health and wellness.
  • The rich omegas in salmon oil help to support the work of the hip, knee, heart, and immune system to keep your four-legged friend healthy and busy every day..

3. PetHonesty


10-For-1 Multivitamin Snacks by PetHonesty provide a well-rounded mix of the most important vitamins and supplements, including glucosamine, probiotics, minerals, and omegas, for the optimal good wellbeing of dogs.

These natural soft chew supplement treatments have high amounts of glucosamine and other ingredients that reduce inflammation of the joints and increase mobility and flexibility in your dog.

Such one-day dog supplements include probiotics and pumpkin that help keep the digestive system running smoothly on your dog and prevent diarrhea, vomiting, and stomach problems.

Eggshell meal and krill oil omegas cure rough, itchy, and flaky skin and improve coat strength, clarity, and overall health.

A blend of vitamins with anti-inflammatory and antioxidant properties enhance the immune system and keep your dog’s heart healthy and strong. Such multivitamins ‘ gentle chew reward shape is attractive and appetizing to dogs, making it easy for you to improve the overall health of your dog.

4. Grizzly All-Natural

Grizzly All-Natural

Their products range from fish oil, wild Alaskan salmon-derived remedies, and limited-ingredient pet food to hemp-enhanced dog and cat supplements. Whether your pet is a cat, a dog, or a horse, they’re passionate about educating all pet owners on the research-documented health benefits of the wild Alaskan salmon omega-3 fatty acids in Grizzly All-Natural.

If you are buying any medication for your pet, make sure it comes from a supplier that is a registered NASC member.

The mission of the NASC is to work in partnership with officials of the state, federal, and foreign governments to create a fair, equitable, and nationally consistent legislative and regulatory environment.

Such a healthy, consistent, and efficient climate serves the interests of NASC members by ensuring compliance with ethical manufacturing and labeling practices throughout the industry.

Grizzly only uses wild-caught salmon in Alaska as they spend their entire lives foraging a diet rich with natural nutrients.

Wild Alaskan salmon have natural nutrients and vitamins that are not present in farmed salmon. Independent third-party testing shows that wild Alaskan salmon produce 40 percent more omega-3 than farmed salmon, so you get 40 percent more calories, and benefits with every serving.

If the rates of omega-6 reach 3.5 percent, it is either farm-raised or molecularly distilled, which is done using alcohol and esters, making it an unnatural drug.
If the levels of omega-6 are secret or not mentioned, the salmon oil is most likely farmed or blended with farmed oil.

If the NASC does not grant approval to the producer of the salmon oil, there is no guarantee that the label and/or product statements are correct because the supply chain and manufacturing practices have not been expected.

Wild Salmon fishing in Alaska is heavily protected and limited. Because Grizzly is a member of NASC, you know its entire supply chain and its expectations has been extensively audited.

Grizzly has established agreements with human-grade fish-processing plants in Alaska to ensure that they use only quality products and leave a minimal ecological footprint..

From its own facilities in Alaska to its offices in Woodinville, WA, Grizzly’s salmon oil remains under their observation until it is packaged and sent to you. Grizzly sends samples of each batch to third-party independent laboratories for content and quality testing.

5. Vital Pet Life

Vital Pet Life

Essential omega 3 fatty acids from their salmon oil supplement will help to keep your pet’s fur soft, smooth, and shiny. You’re going to want to hug them even more than before!

The essential fatty acids in this Wild Alaskan salmon fish oil help to promote healthy skin by strengthening cell membranes that keep them moist and resistant to injury. Instead of itching and scratching, your pet will be much happier playing.

The omega 3 in salmon fish oil helps to stimulate the body of your pet to improve inflammation caused by conditions like gastritis or arthritis. With less pain and tension, normal activities will be more fun and more relaxed.

No more prying open the mouth of your cat to try to get them to take pills. This makes it easy to add their savory oil directly to their food.

Wild Alaskan salmon oil is the ideal protein substitute for your animals. The omega 3 & 6 fatty acids in the salmon oil help the overall health of your pet by supplying their body with nutrients and vitamins, and reducing inflammation.

6. Amazing Omega

Amazing Omega

60 free tablets per bottle make for a total of 120 high-profile bacon- flavoured chewable tables. A delicious chewable tablet that your dog would enjoy, it encourages a shiny coat, strong muscles, and joints and brain health. Amazing Omega is produced with their GMP at an organic certified facility located in the USA.

7. Nutramax


Nutramax Laboratories Consumer Care, Inc. located in Edgewood, Maryland, focuses on the research and development of consumer health promotion products. Nutramax Manufacturing, Inc. produces products at both the sites, in South Carolina and Maryland.

They believe that from The Lord comes their true strength and prosperity and that He praised their company and its outstanding group of employees working together as a team.

8. Iceland Pure

Iceland Pure

Iceland Pure fish oil supplements are carefully processed, formulated, and preserved to preserve omega-3 natural fatty acids,’ natural benefits. Such supplements are made from fish oils of good quality, obtained from the waters of Iceland and Norway.

Iceland harbors the planet’s purest waters and these fish oils contain nutrients that combat cancer, reduce inflammation, and increase blood flow to all parts of the body. This helps to reinforce the vital process of joints, muscles, and organs including the heart and the brain.

Their oils do not contain rosemary as a perpatative. Studies have shown that such extracts may cause neurological problems, seizures, and anemia on certain occasions.

Activists and health-conscious and trained public are aware that many toxic chemicals are manufactured from plastic bottles. If the liquid is left inside a container over time, other liquids tend to break down the plastic.

That’s why only green brushed aluminum bottles are used to house their oils. Their bottles are filled with Epoxy Resin, which becomes like glass once it is hardened. This type of coating will not break down by oil, and the coating will not affect the purity of the oil. Our new brushed aluminum bottles will guarantee a healthier and safer alternative for your furry friends.

Iceland Pure Unscented Pharmaceutical Grade Sardinian Anchovy Oil comes from the clean waters of Iceland. The quantity of omega 3 fatty acids per test is 1,296mg. With great palatability and freshness, the oil is virtually odor-free.It is the recommende Oil for cats. Our sardine anchovy oil undergoes a cycle of molecular distillation, which takes just 45 seconds under a high vacuum, at 250 degrees Centigrade.

The natural purification process also eliminates nearly all toxins and heavy metals to achieve a purity level so high that the toxin-free oil can be branded as such. Samples of the oil are regularly tested for purity by approved, third-party testing companies that follow protocols as stringent or more stringent than US requirements, in compliance with strict European safety standards.

9. Pethonesty Omega Salmon

Pethonesty Omega Salmon

These snacks of raw salmon-flavored salmon oil supplements are made from wild Alaskan salmon, kelp, vitamin E, and DHA, all of which are sustainably sourced. Every chewable tablet (90 in a bottle) contains more omega-3 and omega-6 fatty acids than most other salmon supplements, helping to reduce scratching, improve itchy/dry skin, and shine the coat of your dog.

PetHonesty is committed to quality ingredients and stringent safety requirements. Their salmon dog supplements are homemade, manufactured in the United States, containing zero wheat, GMOs, corn, soy, sugar, or preservatives.Products of the highest quality, which have natural healing and nutritional properties, such as salmon oil and kelp.

The salmon dog supplements come as a delicious soft chew tablet,flavored with natural salmon which your dog will love. The snack chews serve as a treat and provide you and your dog with a bonding experience. In a blind taste test, 9 out of 10 dogs devour these.

A powerful combination of natural ingredients gives them a well-rounded dietary supplement. These also defend against free radicals (Vitamin C and E), reduce inflammation (with omegas), strengthen the immune system/allergies (Kelp), and keep your dog’s heart and brain safe, in addition to enhancing skin and coat safety.

Improve the quality of life and time that you get to spend with your family. Let’s keep our pups can be safe, together.

10. BestPaw Salmon Oil


This wild salmon fish oil from Alaska can give your pet the fluffy, shiny coat you’re looking for. It is omega-rich which works wonders on dry and itchy skin. Bestpaw pet salmon oil is specially filtered and has a slight fragrance. Picky eaters love the taste and will drink it up right away.

This authentic Alaskan wild salmon recipe has the perfect ratio of balanced omega oils. This helps guarantee a soft and shiny coat for your cat.The oil, rich in EPA and DHA, dry, brittle fur. It contains normal omega 7 fatty acids for a healthy metabolism..

This liquid fish oil works wonders on hot spots and on dandruff. In the end, your pet will stop licking their itchy paws. It relieves itching pain and provides immune support for allergies which helps prevent shedding. It also regenerates missing hair, stops .

It is an anti-inflammatory natural oil that reduces soreness in the hips and joints. You will note the revitalized spirit of your pet as they joyfully run around again ever.

The pump is user-friendly. The lifetime money-back guarantee ensures your satisfaction. Best Paw Food is widely respected by pet owners. Browse our whole USA made top-rated pet supplements catalog.

4 Benefits of Fish Oil for Dogs

1. Arthritis Relief

Omega-3 fatty acids are an anti-inflammatory savior for dogs with arthritis, with their therapeutic benefits. The Multicenter Veterinary Practice examined 127 dogs over 60 days while they were being given their daily omega-3 dosage. The dogs showed significant improvements in their ability to comfortably play, walk, and rest. That’s one reason why dogs are given nutrients such as fish oil.

2. Naturally Treats Skin Conditions

The above mentioned anti-inflammatory effects of omega-3 also help to heal allergic skin reactions and skin diseases in dogs. Crossover Research using fish oil as a treatment for dogs with different skin disorders showed significant changes including less itching, less animal self-inflicted damage and an increase in the softness and texture of their fuzzy coats.

If your dog suffers from a serious inflammatory disorder, they can not be completely cured by fatty acids alone; however, omega-3 may be able to enhance the effectiveness of drugs used to treat their disease.

Pachón Navarro spotted dog breeds
Pachón Navarro dog

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3. Cognitive Functions

Canine Cognitive Dysfunction is a common condition in older dogs which resembles Alzheimer’s disease in humans. Daily doses of DHA, the omega-3 fatty acids found in fish oil, are believed to enhance the cognitive functions of infected dogs and their human counterparts.

4. Naturally Treats Kidney Disease

Fish oil is often prescribed to kidney diseased dogs to combat symptoms such as severe protein loss. Fish oil can have a protective effect against acute kidney injury according to Pet Health Network and the Department of Internal Medicines.

The omega-3 fatty acids also help to reduce glomerular disease, thereby improving kidney function in dogs affected. Some studies suggest that fish oil can have a protective effect against acute kidney injury and can be a perfect solution to help relieve impaired function in the kidneys.

Most commercial dog foods contain low levels of omega-3 fatty acid but may have omega-6 fatty acid instead, which causes inflammation. As a consequence, your dog’s diet could actually make it susceptible to inflammatory diseases.

american bull dog
american bull dog

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How is Fish Oil good for Dogs?

Initially used for the treatment of canine allergies, fish oil is now used to treat other conditions as well, including arthritis and high cholesterol. Two essential fatty acids are present in the fish oil supplements: eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). Such compounds are not well synthesised by dogs.

In fish such as salmon, sardines and mackerel, these can be found. Each of the two fatty acids has its own particular set of benefits; for example, EPA is an anti-inflammatory agent and helps treat inflammatory conditions and DHA is essential to the development of the brain and eyes in puppies.

The two fatty acids in fish oil have the ability to reduce cellular inflammation. All EPA and DHA are converted to prostaglandins, which can reduce tissue inflammation.

black and white border collie
black and white border collie

How Much Fish Oil should I give my dog?

Sometimes too much of a good thing can have undesirable side effects. Diarrhea, blood clotting, weight gain, and a weakened immune system may be caused by excessive quantities of fish oil. A dosage of fish oil between 20-55 mg, with combined EPA and DHA per pound of body weight, is healthy for dogs and cats, according to PETMD.

Types of Fish Oils

The omega-3 fish oils are available in two forms, according to Doctor’s Advantage research: the natural triglyceride form or the synthetic ethyl ester form. Fish oil is easier to absorb in natural triglyceride form; however, the ethyl ester form is more common in the market.

pyrenean mastiff puppies
pyrenean mastiff puppies

1. Natural Triglyceride Oil

The most popular and simplest to digest, is natural triglyceride oil. Nevertheless, it may contain toxins such as PCBs, because it is not filtered. Natural triglycerides are one of the most popular commercial fish oils. Due to their natural form, they resemble the effects of eating fish,as a result of which this type of fish oil is often favored.

2. Ethyl Ester Oil

Concentrate and distill the ethyl ester oil (EE) to eliminate impurities. According to the AKC, you may think of it as “semi-natural with high levels of omega-3, docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), which are important components.”

The formulated EE allows molecular distillation at lower temperatures, producing higher levels of EPA and DHA than those found in fish naturally. This type of fish oil is called the “concentrate of fish oil.”

Tibetan Mastiff black
Tibetan Mastiff

Care And Storage Of Fish Oils

It’s important to protect the fish oil from heat, light, and air. Purchase your fish oil and put it in the refrigerator in dark coloured bottles. Since it is susceptible to oxidation, it can get rancid, so be sure to throw it away if it has a strange odor.

Ask your vet how much fish oil is appropriate for your dog instead of following the dose instructions on the box. Make sure the amount of fish oil you give them is appropriate for their size, weight, and age.

It’s hard to feed your dog a completely whole natural diet. With so many artificial additives in some of the dog food today, fish oil may just be the required complement to their dietary needs.

Bouvier des Flandres black
Bouvier des Flandres

Last but not least, be sure to ask your vet for advice before you start your dog on supplements, and only buy quality items if that is the path you want to take .

Potential Side-effects of Fish Oil for Dogs

Although fish oil is generally ok for dogs, side effects and concerns are recorded before these healthy omegas are included in a dog’s diet. Dogs with allergies to seafood or shellfish should not ingest fish oil, unless suggested as part of a treatment plan by a veterinarian.

Some fish oils can cause bad breath. It won’t really annoy your dog, but you might not like your pup’s fish-breathing kisses. Generally speaking, you can put a stop to this issue by simply reducing the amount of supplement that you provide at each meal.

Some omega-3 fatty acids (including both EPA and DHA) can cause the body of your dog to stop correctly coagulating. This can be particularly problematic for dogs who have a laceration, are scheduled for surgery, or are taking any other medications that also reduce the ability of the blood to coagulate.

brown and white husky dog with different coloured eyes

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The inflammatory-reducing effects of omega-3 fatty acids delay the healing process and reduce white blood cell development, which is used by the body to fend off infections. So you might want to think twice about supplying fish oils to dogs suffering from injury or illness.

Some dogs are unable to adequately digest supplements of fish oil, which can cause bowel distress. While these issues often resolve on their own with time, it certainly isn’t fun in the meanwhile for your dog.

Since your dog food generally already contains good quality omega-3 fatty acids, most pet parents add fish oil to a daily diet only when a veterinarian advises it, for specific health issues. Some side effects, however, can occur such as:

  • Mild oily coat
  • Fishy breath
  • Fish-smelling skin and coat
  • Diarrhea
  • Blood clotting defects
  • Slow wound healing
  • Interacts with some medications
afghan hound dog white
afghan hound

Which Dogs Benefit the Most from Fish Oil?

Although dogs of all ages, sizes, and breeds can benefit from daily supplementation with fish oils, there are only a few classes that can benefit greatly.

1. Older Dogs

Older dogs, particularly arthritis sufferers, will be able to move much more painlessly and comfortably as fish oils help stop and minimize any swelling and inflammation around their joints.

This should reduce their blood pressure, improve their heart, and also lower cholesterol levels.

2. Puppies

Puppies can also hugely benefit from fish oils. Different studies have shown that puppies with an optimal DHA level are easier to train than those without it, due to the cognitive functional effect of the fatty acid.

It also helps boost their immune system to help them battle any disease or infection they may be vulnerable to while young.

akbash white puppies
akbash white puppies

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3. Pregnant Dams

In the same vein, pregnant dams are also a prime candidate for the supplementation of fish oil. It will not only greatly assist the fetus ‘ growth, but it will also protect the dam against disease by enhancing her immune system while keeping down her blood pressure.

4. Dogs With Specific Health Conditions

Obviously, dogs suffering from omega-3 deficiency will also benefit greatly from supplementation of fish oil. Symptoms of this include dry skin and hair, pain in the joints, and rapid fatigue.

And ultimately, it is widely believed that it will help larger dogs that are susceptible to joint problems, with Labrador Retrievers, Golden Retrievers and German Shepherds.

german shepherd
german shepherd

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I covered all of the costs associated with writing this post on the best fish oils for dogs. However, it does contain affiliate links. That means if you click through on some of the links in this article and end up making a purchase I may receive a small commission. It won’t affect the price that you pay. Just wanted to let you know.

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