Nordic Naturals Omega-3 Pet Review: A Long Look at Fish Oil for Otis

The thing that got me looking at fish oil was not Otis's hips. It was his coat. Somewhere in the winter of 2025 I noticed that when I ran the brush over him it came away with more than it used to, and the skin underneath had gone dry and flaky, the way a floor looks when it has needed a mop for a week. His hips were already being handled. His coat was not. So when Dr. Haldane went through the labels I had stacked on her counter and put her finger on Nordic Naturals Omega-3 Pet, I wrote it in the notebook and went and got a bottle.

That was February 2025. He has had it every morning since, which is twenty-one months of mornings, long enough that I can tell you what I actually saw instead of what the label hopes you will see. I am not a veterinarian and I have never been a vet tech. I spent twenty-eight years at a dispatch desk for one county school district, and I keep a spiral notebook on the kitchen counter with one line a day: how Otis got up, how he did on the three concrete steps off the back porch, how far we walked. That notebook is the only reason I trust anything I say about a supplement.

How I've Used It

The bottle is eight ounces, 237 milliliters, about six inches tall and two inches square, and that matters more than it sounds like it should. It stands upright in the refrigerator door without falling over every time somebody opens it. The label says to refrigerate after opening, and I have done that from the first day, so it has never once sat out on the counter next to the cheese.

The amount I give is the amount the weight chart on the label gives for a dog his size. Otis is a black Lab mix, seventy-four pounds, eleven years old, arthritic in both hips with the right one worse and a stiff left elbow that showed up on X-rays in October 2024. I pour the Nordic Naturals over his kibble at breakfast, seven o'clock, same as everything else in his lineup except the turmeric. It is unflavored, which in practice means it tastes like fish oil and nothing else. Otis does not care. He has never once turned his head away from a bowl with this on it.

The part nobody tells you is that fish oil on dry kibble does not disappear. It sits there in a slick at the bottom of the bowl and the last few pieces get coated in it. Otis licks the bowl anyway. The bowl then has to be washed properly, not just rinsed, or the kitchen starts to smell by Thursday. That is a small thing. Over twenty-one months it is also a real thing.

What Is Actually in the Bottle

The short version: 1,380 milligrams of fish oil with EPA and DHA, in liquid form, unflavored. It is made in what the company calls the triglyceride molecular form, which is the form the oil takes in the fish itself rather than the more heavily processed ethyl ester form. I am repeating what is printed on the label, because I am not a chemist and I am not going to pretend to be one. What I can tell you is that Dr. Haldane read that label front and back and did not have a problem with it, and she has had a problem with plenty of things I have carried into her office over the years.

The rest of the label: non-GMO, gluten free, dairy free, no artificial colors, no artificial flavors, no preservatives. The allergen line says fish, which will surprise nobody. The listed uses are coat, eyes and heart, and the benefit line mentions eye care, heart health and immune support. Dog breed size on the listing says medium, which is a strange thing for a bottle of oil to say, but there it is. Otis at seventy-four pounds sits squarely inside that range.

What is not in the bottle matters just as much. There is no glucosamine in here. No chondroitin, no MSM, no green lipped mussel, no turmeric. If you are reading this because your dog is stiff getting up in the morning, understand that you are looking at a fish oil and not a joint supplement. Omega-3s are the reason a fish oil turns up in joint conversations at all, and this one has plenty of them, but the label itself does not make a joint claim. It says coat, eyes and heart.

What Changed in the Notebook, and What Did Not

I will start with what did not change, because that is the honest place to start and because I have read too many reviews that skip straight past it. I saw no change in his hips that I could point to and say, that was the fish oil. None. In February 2025 he was getting up off the living room carpet with that slow two-stage push, front end first, then a pause, then the back end. He is better at that now than he was then. But he was already on his glucosamine by then, and the mussel chews came in May, and I cannot untangle one from another. If somebody tells you they can, on a dog taking four or five things, they are guessing.

What did change was the coat, and it changed in a way the notebook could actually show. I had started writing down brushings in January, mostly because I was annoyed. Six to eight weeks after we started the Nordic Naturals, the brush was coming away lighter. By April the flaky patches along his back, the ones that looked like a light dusting of flour, were mostly gone. His coat had a shine to it in the sun that it had not had in a couple of years. That is not a joint result. It is a real result, and I am not going to dress it up as more than it is.

The other honest note is about his weight. Dr. Haldane wanted him under seventy-five pounds and he has stayed at seventy-four through all of this. Fish oil did not do that. I did that, by measuring kibble and not giving in when he sat down by the counter and looked at me. I would be lying if I said I thought any bottle mattered more to how he moves than that did.

The Coat, Which Is the Part Nobody Mentions

People bring up fish oil for joints and they bring up skin and coat in the same breath, but the coat usually gets one line in a list. For Otis it was the whole thing. He is a black Lab mix and a black coat shows every flake. By the spring of 2025 I could pet him without coming away with a hand full of dander, and that had not been true for a while.

I have no way to prove this bottle did that alone. He was on the glucosamine chews, which carry some omega-3s on their own label, and he was eating better once we had his weight sorted out. But the timing lined up, it lined up at about eight weeks, which is roughly what a person would expect, and it has held through every season since, including a Findlay winter, which is a hard test for anybody's skin.

One thing I will say plainly: a shiny coat is not the same as comfortable hips. If you are here because your dog is slow on the steps, a better coat will not fix that. It is a nice thing to get. It is not the thing you came for.

The Daily Fuss: Smell, Storage, and Ron

The oil smells like fish. Not in a subtle way. It smells like the fish counter at a grocery store, and cold does not improve it, it just makes it cold. Otis does not care. Ron cares. Ron has commented on it roughly once a week for twenty-one months, which is a little over ninety comments, and I have stopped answering them.

Storage is the one thing I would tell a friend to get right. It goes into the refrigerator door the day it is opened and it stays there. I have never left it out on the counter. If you are the sort of person who keeps the dog's supplements in a basket next to the kibble bin, this one does not belong in that basket. The eight-ounce bottle lasts us a good while at his amount, and I like that it is one bottle to pour instead of a jar of chews I have to count out every morning.

Travel is the other small annoyance. When we go anywhere overnight I pour a day's worth into a small jar, which is a fiddle. There is no way around that with a liquid. I do it anyway, because the one time I skipped it I felt guilty about it for a week, which tells you more about me than it does about the product.

Where It Fits in a Five-Product Routine

Otis takes five things. The glucosamine soft chews he started in November 2024, which is the only one I will ever say seemed to work first. The Nordic Naturals in February 2025. The green lipped mussel chews in May 2025. The hyaluronic acid liquid in September 2025. The turmeric tablet in February 2026, at dinner instead of breakfast. Four of the five land at breakfast. He started them one at a time, months apart, and I have never stopped any of them to test it, which means I cannot prove which one did what, and I have stopped pretending otherwise.

What I can tell you is that the combination is why he gets up easier than he did in October 2024, walks about twenty minutes instead of twelve, and goes down the three back porch steps steadily instead of one at a time with a pause on each. He is still slow coming up. Cold, wet days are still his worst. He does not jump into the Chevy Equinox and he never started again; Ron lifts his back end in, and no bottle changed that. Otis is not cured and he is not young again, and nothing I have tried made him run.

I keep the fish oil in the lineup for two reasons. The first is that Dr. Haldane recommended it and she has been his vet since he was a puppy. The second is the coat. If a supplement gives me one thing I can see with my own two eyes and write in a notebook, I will keep buying it.

Six to eight weeks after we started, the brush was coming away lighter. That is the only result from this bottle I can point to with my whole hand, and I am not going to dress it up as anything bigger.

Who This Is For

This is for the owner who already has the joints covered and is wondering about the rest of it. If your dog is on a glucosamine product and your vet has mentioned omega-3s, and the coat has gone dull or flaky, this is a reasonable bottle to add. It is also for the owner who would rather pour a liquid than count out one more chew, and who does not mind keeping it cold. Otis is eleven, seventy-four pounds, arthritic in both hips with the right one worse, and at that size the Nordic Naturals weight chart gives an amount that pours easily over one meal without swamping the bowl. Ask your own vet before you start, the way I did. Dr. Haldane looked at every label first, and that is the only reason I was willing to add a fifth thing to a dog who was already taking four.

Who Should Skip It

Skip it if you are hoping this is the joint answer. It is not, and I would rather you close the tab than buy it expecting his hips to loosen up in a month. Skip it if your dog has a fish allergy, since fish is the allergen printed on the label. Skip it if a bottle in the refrigerator door is going to be a nuisance you resent by week three, because it does need to stay cold and it does need measuring every morning. And skip it if your dog is carrying extra weight, because that is the first thing to fix and no oil on any shelf will outrun it. Otis stayed at seventy-four pounds on Dr. Haldane's instruction and that did more for how he moves than anything in that door.