Many pet parents first hear about omega-3s when a vet suggests fish oil to ease itchy skin. But these healthy fats do much more than support coat health—omega-3s also play a vital role in heart health.
Docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA)—two key marine omega-3s—help maintain steady heart rhythms and keep your dog’s brain sharp. If you’ve only associated omega-3s with skin support, it’s time to discover why they belong in your dog’s everyday wellness routine.
Meet omega-3 & DHA
- Omega-3 for dogs is a family of “good” fats the body can’t produce on its own, so every milligram must come from food or supplements.
- DHA for dogs is a standout member of that family—it integrates into cell membranes, making them flexible and efficient, especially in the heart and brain.
- EPA partners with DHA to calm inflammation—think of them as the tag-team your dog’s organs rely on during stress or injury.
How omega-3s strengthen dog heart health
Smoother, steadier beats
DHA keeps calcium moving in and out of heart-muscle cells, a key driver of a consistent heartbeat. A 2024 study found that dogs given EPA+DHA showed measurable improvements in their Omega-3 Index—a blood marker tied to cardiovascular resilience.
Tamer triglycerides
Elevated blood fats strain the heart. EPA acts like a metabolic switch, nudging the liver to produce fewer triglycerides and helping arteries stay flexible.
Natural anti-inflammatory
Chronic, low-grade inflammation can lead to arrhythmias or valve issues. EPA-derived molecules help tone that inflammation down before lasting damage builds up.
Bottom line:
Regular omega-3 intake is one of the simplest nutrition tweaks you can make for long-term dog heart health.
Brain boosts you can’t see—but will notice
- Sharper learning in puppies – DHA becomes part of growing neurons. In a 2023 trial, puppies given DHA-rich fish oil outperformed unsupplemented littermates in problem-solving tests.
- Slower cognitive slide in seniors – A systematic review found DHA doses of 25–70 mg per kg support memory and executive function in aging dogs.
- Mood & stress support – Early research suggests balanced omega-3 levels may help regulate serotonin pathways, potentially easing anxiety in some pets.
Other perks worth a quick mention
- Joint comfort – Omega-3s help reduce inflammation inside joints, which can ease everyday stiffness.
- Immune balance – EPA and DHA promote a measured immune response, helping avoid overreactions like itching or gut upset.
- Healthier weight management – Omega-3s may improve how cells use insulin, helping overweight dogs process energy more efficiently.
Signs your dog may be running low
- Dull coat or flaky skin that returns quickly after grooming
- Excessive shedding despite a solid diet
- Sluggishness during exercise or long recovery after play
- Senior “cloudiness”: staring at walls, slower puzzle-solving
- Veterinary blood work showing consistently high triglycerides
If two or more of these signs sound familiar, bring it up at your next vet visit—it may be time for an omega-3 check.
Easy ways to add omega-3 for dogs
Fishy favourites
- Wild salmon or sardines (packed in water) stirred into dinner twice a week
- Freeze-dried green-lipped mussel toppers for picky eaters
Supplements
- Liquid fish oil: Start around 30 mg combined EPA+DHA per kg of body weight daily, then adjust with your vet’s guidance.
- Soft-chew blends that pair DHA with supportive vitamins (look for third-party purity testing).
Tip: Store oils in the fridge and use them within 90 days—oxidation reduces potency and may upset sensitive stomachs.
Safety and dosing at a glance
- Stick to manufacturer or vet-recommended amounts—mega-dosing can thin the blood or upset digestion.
- Introduce oils gradually over a week to avoid loose stools.
- If your dog is on anti-coagulant meds or has a bleeding disorder, always consult your vet first.
Key takeaways
- Omega-3 for dogs does far more than shine a coat—it supports heart rhythm, brain development, and aging cognition.
- DHA for dogs is the omega-3 MVP—look for sources rich in DHA and EPA from fish oil or algae.
- Consistent intake—via oily fish, quality supplements, or both—delivers the best long-term benefits for dog heart health.
- Watch for subtle deficiency signs and adjust your dog’s diet or supplement routine accordingly.
- Partner with your vet for exact dosing—simple blood work can help fine-tune the plan in just one visit.
Ready to give your dog’s heart and mind a leg-up? Jot down what’s currently in the bowl, choose an omega-3 source that fits your routine, and ask your vet about the right dose. A splash of oil or a chew a day can lead to many more tail-wagging tomorrows.
Looking for an easy place to start? Doctor Paws Super Chew is a dog supplement packed with vet-approved levels of DHA and EPA—no messy oils, just smart support in every bite.