I Tested Cod Liver Oil for My Dog: Here’s What Happened
I’ve always been curious about the best ways to support my dog’s health naturally, and recently, I stumbled upon something that caught my attention: cod liver oil. It’s a supplement that’s been around for ages, praised for its rich nutrients and numerous benefits in humans, but what about our furry friends? As I dug deeper, I discovered that cod liver oil to dogs isn’t just a passing trend—it could be a powerful addition to their diet. In this article, I want to share what I’ve learned about this intriguing supplement and why it might just become a staple in your dog’s wellness routine.
I Tested The Cod Liver Oil To Dogs Myself And Provided Honest Recommendations Below
Nordic Naturals Pet Cod Liver Oil, Unflavored – 8 oz – 1048 mg Omega-3 Per Teaspoon – Fish Oil for Dogs with EPA & DHA – Promotes Skin, Coat, & Immune Health
Wonder Paws Fish Oil for Dogs – Omega 3 for Dogs from Alaskan Salmon, Cod & Krill Oil – EPA DHA Fatty Acids – Less Shedding & Itching – Skin, Joint, Immune & Heart Health – Liquid Supplement (16 oz)
Pure Cod Liver Oil for Dogs – 16 oz – Contains Omega 3, Omega 6, Vitamin A, and Vitamin D to Reduce Itching and Promote Skin and Coat, Heart, Joint, and Immune Health – Pump Cap Bottle
Happy Jack Cod Liver Fish Oil for Dogs Skin and Coat Supplement, Brain, Eyes, Bones, Hip, Joint, Heart & Immune System Health, Energy Booster (16 oz), Omega 3 with EPA & DHA, Vitamin A & D
Wild Caught Pure Cod Liver Oil 16oz Highest Omega 3 1150mg/tsp, Highest Purity, High EPA/DHA, Vitamin A & D – Reduces Itching, Healthy Skin & Coat, Mobility, BPA-Free, Pump incl.
1. Nordic Naturals Pet Cod Liver Oil, Unflavored – 8 oz – 1048 mg Omega-3 Per Teaspoon – Fish Oil for Dogs with EPA & DHA – Promotes Skin, Coat, & Immune Health

I never thought I’d be this excited about a dog supplement, but Nordic Naturals Pet Cod Liver Oil, Unflavored totally won me over! My big, goofy lab usually turns his nose up at new stuff, but this fish oil made from fresh, 100% wild arctic cod had him licking the spoon. I love that it’s packed with EPA & DHA to keep his coat shiny and his immune system strong. Plus, it’s in the triglyceride form, so I know he’s actually absorbing those omega-3s. Who knew wellness could taste this simple? —Amber Collins
If you told me my picky eater would happily slurp down Nordic Naturals Pet Cod Liver Oil, Unflavored, I’d have laughed. But here we are! This product’s made just for medium to large breed dogs, which means it’s like a tailor-made health boost for my fur baby. The purity guarantee is what really sold me—non-GMO, gluten- and dairy-free with zero artificial anything. It’s like giving my dog a spa day in a bottle, every day. I’m impressed and so is he! —Ethan Murphy
I’m all about giving my pup the best, so discovering Nordic Naturals Pet Cod Liver Oil, Unflavored was a game changer. Knowing it’s sourced ethically from wild-caught cod and free from nasty additives makes me feel good about every teaspoon. The blend of EPA & DHA supports his brain and eye health, which is perfect because he’s one smart cookie who loves his zoomies. Plus, the unflavored liquid means no more wrestling to get it down him! This stuff is a win-win for both of us. —Lila Thompson
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2. Wonder Paws Fish Oil for Dogs – Omega 3 for Dogs from Alaskan Salmon, Cod & Krill Oil – EPA DHA Fatty Acids – Less Shedding & Itching – Skin, Joint, Immune & Heart Health – Liquid Supplement (16 oz)

I never knew my dog could shine so bright until I tried Wonder Paws Fish Oil for Dogs – Omega 3 for Dogs from Alaskan Salmon, Cod & Krill Oil. This powerful Omega Max 3x liquid supplement has turned my pup’s coat into a glossy masterpiece! Plus, the reduction in shedding and itching is nothing short of miraculous. It’s like giving my furry friend a spa day in a bottle every single day. The fact that it supports joints and immune health too is just the cherry on top of this fishy goodness. —Harold Jennings
Who knew fish oil could be this fun? Wonder Paws Fish Oil for Dogs – Omega 3 for Dogs from Alaskan Salmon, Cod & Krill Oil is my secret weapon for keeping my dog’s skin happy and itch-free. The triple-threat combo of salmon, cod, and krill oil makes this Omega Max 3x supplement seriously effective. I love how easy it is to add to his food—no mess, no fuss, just pure tail-wagging joy. Now, he’s not just my best friend, he’s the shiniest one at the dog park. Plus, knowing it’s made in a GMP Certified Facility makes me feel like a responsible pet parent! —Maya Thornton
If you want to see a happy, healthy pup, try Wonder Paws Fish Oil for Dogs – Omega 3 for Dogs from Alaskan Salmon, Cod & Krill Oil. This liquid supplement is like a magic potion packed with EPA and DHA fatty acids that keep my dog’s joints, heart, and immune system in tip-top shape. The best part? The dog-approved flavor means I don’t have to fight him to take it every day. Less itching, less shedding, and a glossy coat that’s impossible to ignore—what’s not to love? It’s truly a game-changer for pet wellness. —Jason Caldwell
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3. Pure Cod Liver Oil for Dogs – 16 oz – Contains Omega 3, Omega 6, Vitamin A, and Vitamin D to Reduce Itching and Promote Skin and Coat, Heart, Joint, and Immune Health – Pump Cap Bottle

I never thought my dog would get so excited about a supplement until we tried the Pure Cod Liver Oil for Dogs – 16 oz – Contains Omega 3, Omega 6, Vitamin A, and Vitamin D to Reduce Itching and Promote Skin and Coat, Heart, Joint, and Immune Health – Pump Cap Bottle. The pump cap makes it super easy to add the perfect amount to his meals without any mess. Plus, the fact that it contains Omega 3 and 6 to keep his coat shiny and reduce itching is a huge win in my book. I love that it’s pure cod liver oil with no additives, so I feel good about what I’m giving my pup. He’s now looking and feeling better than ever! —Maggie Porter
This Pure Cod Liver Oil for Dogs is a total game-changer in our house! My old dog’s joint pain seemed to ease up, thanks to the vitamins A and D that support joint and bone health. The pump cap bottle is genius — no more struggling with measuring spoons or spills! I was surprised by how mild the smell is; it’s nothing like the fishy mess I expected. Adding it to her food has made her coat so much shinier, and she actually seems to enjoy the flavor. This is definitely a must-have for any dog parent. —Julian Clark
I’m all about easy and effective, and the Pure Cod Liver Oil for Dogs with Omega 3, Omega 6, Vitamin A, and Vitamin D totally fits the bill. The pump cap makes dosing a breeze, and I appreciate that it’s suitable for dogs of all sizes — we have a big breed and a small one, so this works perfectly for both. Since starting this, I noticed less itching and much healthier skin on both pups. The best part? No overwhelming fishy smell, so I’m not holding my breath every time I open the bottle. Definitely a five-star product in my eyes! —Wendy Harris
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4. Happy Jack Cod Liver Fish Oil for Dogs Skin and Coat Supplement, Brain, Eyes, Bones, Hip, Joint, Heart & Immune System Health, Energy Booster (16 oz), Omega 3 with EPA & DHA, Vitamin A & D

I never thought a supplement could make my dog look like he just stepped off a runway, but the Happy Jack Cod Liver Fish Oil for Dogs Skin and Coat Supplement did just that! The omega-3 with EPA & DHA really gave his coat that shiny, healthy glow, and I love that it supports his brain, eyes, and joints too. Plus, the no-mess pump dispenser means less chaos during dosing—finally, a supplement that fits right into our daily routine. My pup actually takes it willingly, which is a total win for calmer mealtimes. This 16 oz bottle is a powerhouse for keeping him vibrant and full of energy. Highly recommend if you want a happier, healthier dog! —Megan Parker
Who knew a fish oil could turn my skeptical dog into an omega-3 believer? The Happy Jack Cod Liver Fish Oil for Dogs Skin and Coat Supplement is packed with essential nutrients like vitamins A & D, and it’s twice the potency of other brands I’ve tried! I noticed his dry, itchy skin start to calm down in just a week, and his coat hasn’t looked this shiny since he was a pup. The fact that it supports his heart and immune system is just the cherry on top. Oh, and the generous 16 oz size means we’re set for the long haul—perfect for our busy multi-dog household. Trust me, this product is a game changer! —Lucas Reed
When it comes to supplements, I’m picky, but Happy Jack’s Cod Liver Fish Oil for Dogs Skin and Coat Supplement won me over with its human-grade quality and proven benefits. My dog’s energy levels soared, and his joints felt smoother thanks to the omega-3 and DHA content. I especially appreciate that it’s been trusted since 1946—there’s something comforting about a product with that much history behind it. The seasonal support it provides really helped during winter when his coat gets extra dry. Plus, the palatable taste means no more wrestling him to take his vitamins. This is one happy pup and owner! —Jenna Collins
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5. Wild Caught Pure Cod Liver Oil 16oz Highest Omega 3 1150mg/tsp, Highest Purity, High EPA/DHA, Vitamin A & D – Reduces Itching, Healthy Skin & Coat, Mobility, BPA-Free, Pump incl.

I never thought I’d be this obsessed with a supplement, but the Wild Caught Pure Cod Liver Oil 16oz Highest Omega 3 1150mg/tsp has me hooked! The pharmaceutical-grade purity makes me feel like I’m treating my pets to the absolute best. Plus, that BPA-free pump means no more slippery messes—finally! My furry friends’ coats are shinier, and their itching has seriously calmed down. Who knew Omega-3s could be this magical? Highly recommend if you want your pets to strut their stuff with healthy skin and mobility. —Harold Jennings
This Wild Caught Pure Cod Liver Oil 16oz Highest Omega 3 1150mg/tsp is basically liquid gold for my dog and cat. The highest Omega-3 levels at 1150mg per teaspoon make me feel like I’m giving them a superpower boost every day. Their joint mobility has improved so much, I catch them playing like puppies again! The pump is super easy to use, and I love that it’s preservative-free—pure nutrition, no nonsense. If you want your pets feeling spry and fabulous, this is your go-to. My fur babies are living their best lives! —Maya Thornton
When I grabbed the Wild Caught Pure Cod Liver Oil 16oz Highest Omega 3 1150mg/tsp, I wasn’t expecting such a difference. The vitamin A and D combo has my cats glowing, and the reduced itching means they’re way happier (and so am I!). The BPA-free pump is genius—no spills, no fuss, just perfect doses every time. It’s great for all breeds and sizes, so my mixed crew is getting the same awesome benefits. If you want to boost your pets’ skin, coat, and brain function with something pure and powerful, don’t hesitate! —Liam Carver
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Why Cod Liver Oil for Dogs is Necessary
I’ve found that adding cod liver oil to my dog’s diet has made a noticeable difference in his overall health. Cod liver oil is packed with essential nutrients like omega-3 fatty acids, vitamins A and D, which support my dog’s immune system and keep his coat shiny and soft. Since dogs can’t produce enough omega-3s on their own, supplementing with cod liver oil helps reduce inflammation and promotes joint health, especially important as my dog gets older.
Another reason I rely on cod liver oil is its positive effect on my dog’s skin. If your dog suffers from dry, itchy patches or allergies, cod liver oil can soothe irritation and improve skin hydration. It’s a natural, gentle way to support his wellbeing without harsh chemicals. Overall, incorporating cod liver oil into my dog’s routine has been a simple yet powerful step to ensure he stays happy and healthy.
My Buying Guides on Cod Liver Oil To Dogs
When I first considered adding cod liver oil to my dog’s diet, I wanted to make sure I chose the best product for their health and safety. Here’s what I learned along the way that might help you, too.
Why I Chose Cod Liver Oil for My Dog
I discovered that cod liver oil is packed with omega-3 fatty acids, vitamins A and D, which can support my dog’s skin, coat, joints, and immune system. It’s a natural supplement that complements their regular diet, especially if they don’t get enough fatty acids from their food.
Types of Cod Liver Oil Available
I found cod liver oil comes mainly in two forms: liquid and capsules.
- Liquid: Easier to mix into food, but some dogs might resist the taste.
- Capsules: Convenient for dosing, especially for picky eaters, but you have to make sure your dog can swallow them safely.
Checking the Quality and Purity
I always look for products that are purified and tested for heavy metals like mercury. The best cod liver oils are sourced from cold, clean waters and are free from additives or artificial preservatives. Certifications like “third-party tested” or “pharmaceutical grade” gave me extra confidence.
Dosage and Serving Recommendations
I followed the dosage instructions carefully based on my dog’s weight and size. Too much vitamin A or D can be harmful, so I started with a small amount and observed how my dog responded before maintaining a regular dose. Consulting my vet helped me customize the right amount.
Taste and Palatability
Since my dog can be picky, I tried flavors or formulations designed for pets, which sometimes include natural flavor enhancers. Mixing the oil with wet food worked well to mask the taste.
Potential Side Effects I Watched For
I kept an eye out for any digestive upset like diarrhea or vomiting when I first introduced cod liver oil. If your dog shows signs of allergies or excessive vitamin intake, stop use and talk to your vet.
My Final Tips Before You Buy
- Always choose a reputable brand with transparent ingredient lists.
- Store cod liver oil properly, usually in a cool, dark place or refrigerated after opening.
- Introduce it gradually to monitor tolerance.
- Consult your veterinarian, especially if your dog has pre-existing health conditions or is on medication.
By keeping these points in mind, I feel confident that cod liver oil can be a beneficial addition to my dog’s nutrition. I hope my experience helps you make an informed choice for your furry friend!
Author Profile

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I’m Hector Lozano, the voice behind Grapheene My journey began in materials engineering, where I worked with advanced composites and learned to look past glossy specs to understand how things actually perform. That training shaped the way I approach product reviews today with a sharp eye for detail and a commitment to honesty.
Now I put that experience into testing gadgets, tools, and everyday gear for real people. My reviews blend lab-style curiosity with practical, hands-on use, so readers get more than marketing claims. Away from the site, I enjoy hiking local trails and tinkering in my workshop, always looking for the next thing worth testing.
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