The Best “Superfoods” for Cats (and the Ones That Are Just Marketing)

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I don’t know about you, but when I see the word “superfood” I automatically think “healthy.” The truth is it’s a clever marketing word invented to sell things, and the pet-food version of it is even looser than the human one. When I see a bag of cat food bragging about kale and blueberries and turmeric, my first thought is “ooooh, healthy!”, but that’s not always the case. Cats are obligate carnivores, which is a fancy way of saying they’re built to run on meat and they get almost nothing out of a sprinkle of trendy plant matter. Most of what gets called a feline superfood is doing more for the human reading the label than for the cat eating the food.

That said, there are a handful of foods actually worth adding to a cat’s bowl, the ones that actually deliver something your cat can use, and I do keep a few of them in regular rotation for Thelma and Louis. The trick is knowing which extras actually do something and which ones are just fairy dust, and being clear-eyed that any of this is a topper on top of good food, never the main event.

First, the part nobody selling you superfoods wants to say

The single most important thing in your cat’s diet is that it’s complete and balanced. You should look for an AAFCO statement on the label saying it provides everything a cat needs in the right amounts, and no amount of pumpkin or salmon oil or freeze-dried liver makes up for a food that isn’t covering the basics. Everything in this article should be considered an extra, and should account for generally under about ten percent of your cat’s daily calories. Because the fastest way to wreck a carefully balanced diet is to pile so many toppers on top of it that the balanced part stops being the bulk of what your cat eats.

So the right way to read this list is “small, occasional, on top of good food,” not “swap these in for meals.” A cat who fills up on sardines and skips their actual dinner is a cat headed for a nutrient problem, even though the sardines themselves are great.

The extras actually worth adding

These are the ones I think earn their spot, with the catch attached to each, because every single one of them has a limit.

Omega-3s, the extra I’d add first

If I could only add one thing to a cat’s diet, it would be omega-3 fatty acids, the EPA and DHA you get from oily fish and fish oil, because they’re one of the few “extras” with real evidence behind them for skin, coat, joints, and kidney and heart support. A dull, flaky coat is often the first place you’d notice the difference, and the omega-3s are also the reason a lot of cats with achy older joints get a little more comfortable.

The everyday way we get omega-3s into Thelma and Louis is the ACANA lickable treats, which are gel-style purees in little tubes that both cats go for, and they double as a sneaky hydration boost since they’re mostly water. They’re also the treat we landed on after discovering that Thelma is allergic to Churu specifically, which gives her a stomach reaction, so the ACANA tubes are the closest equivalent we found that works for her, and the household has gone through an embarrassing number of them at this point.

For a more concentrated dose, plain canned sardines packed in water with no added salt are one of the best whole-food sources of omega-3s you can buy, and a small piece of one mashed into dinner a couple of times a week is plenty for most cats. Buy the water-packed kind, never the ones in oil or brine or tomato sauce, drain them well, and treat them as the strong-smelling occasional treat they are rather than a daily thing, because they’re rich and the fat adds up.

If you’d rather not deal with fish in your fridge, a fish-oil supplement made for cats is the clean, dose-controlled version, and it’s the one I’d point you to if your vet has flagged your cat’s coat, joints, or kidneys. The one rule that matters: use a product actually formulated and dosed for cats, not the human or dog bottle and not a plant-based “omega” oil, because the plant kind (ALA) is the form cats can barely convert, and more is not better since too much fish oil just causes loose stools.

Plain pumpkin, the hairball and tummy helper

Plain canned pumpkin is the one plant food I keep on hand without hesitation, because the soluble fiber really does help with the two things that send indoor-cat owners googling at midnight, hairballs and the occasional bout of mild constipation or loose stool. Half a teaspoon to a teaspoon mixed into a meal is the whole dose, and the only thing you have to get right at the store is grabbing the can that’s one hundred percent pumpkin and not the pie filling, which is loaded with sugar and spices your cat shouldn’t have.

Bone broth, for the cat who won’t drink water

Most cats are bad at drinking water, and a splash of cat-safe bone broth over a meal is one of the easier ways to sneak more moisture into a cat who treats their water bowl as decorative, plus it makes dry or boring food a lot more interesting to a picky eater. The thing you have to watch, and it’s a big one, is that almost every bone broth made for humans contains onion and garlic, both of which are toxic to cats, so you want one made specifically for pets or a plain homemade version with nothing in it but broth.

A bit of cooked egg

A little plain cooked egg, scrambled or boiled with no oil, butter, or salt, is a cheap and highly digestible hit of protein that a lot of cats love, and it’s about as simple as a topper gets. The only rule is that it has to be cooked, because raw egg white contains a protein that interferes with a B vitamin and raw egg carries the same bacteria risk it does for us, so the runny stuff stays off the menu.

Organ meat, in very small amounts

Liver and other organ meats are the original nutrient-dense cat food, packed with vitamin A, iron, and B12, and they’re catnip-level exciting to most cats, but this is the one where “more is better” will actually hurt your cat, because vitamin A is fat-soluble and builds up, and too much liver over time causes real skeletal problems. The safe way to get the benefit without the risk is a single-ingredient freeze-dried treat, where the portions are tiny and easy to keep occasional, and it happens to be the category Thelma and Louis lose their minds for. The freeze-dried turkey liver from Petco’s WholeHearted line is the one they’d trample each other for, and on the Amazon side a single-ingredient freeze-dried like PureBites is the easy, widely loved option.

Plain cooked chicken or turkey

This one isn’t exciting and that’s exactly why it works, because a little plain cooked chicken or turkey, skinless, boneless, and unseasoned, is the safest, most reliable topper there is for a picky cat or a sick one who’s gone off their food. No onion or garlic in the cooking, no cooked bones (they splinter), and that’s the whole instruction. When Thelma’s being dramatic about dinner, a few warm shreds of plain chicken on top is the thing that most reliably gets her to actually eat.

Blueberries, the fun one I won’t oversell

You’ll see blueberries on every “superfoods for cats” list on the internet, and they’re safe, so if your cat enjoys batting one around and eating it, no harm done. But I’m not going to pretend a couple of blueberries are transforming your cat’s health, because the antioxidant benefits people cite are mostly extrapolated from dog and human studies, and a cat is a meat machine that does very little with a berry. File it under harmless novelty, not health food.

The “superfoods” to skip, or be careful with

Plenty of foods get marketed to cats that I’d either avoid or treat with real caution. Tuna is the big one, because cats get addicted to the strong flavor and will start refusing balanced food in favor of it, and a steady tuna habit can lead to mercury buildup and a thiamine (vitamin B1) deficiency, so a tiny bit as an occasional treat is the most I’d do. Any raw fish is off my list entirely, since it contains an enzyme that destroys thiamine on top of the usual parasite and bacteria risks, which is the whole reason the fish above is always cooked. Milk and dairy are the classic cartoon cat food and also a mistake, because most adult cats are lactose-intolerant and a saucer of milk just buys you a litter box situation. And the trendy plant superfoods, the kale and turmeric and goji berries showing up on labels, are the fairy dust the Tufts nutritionists were talking about, fine in the trace amounts that end up in food but not worth seeking out.

How to add this stuff without wrecking the diet

If you want to actually work some of these in, the approach that keeps it safe is pretty simple:

1. Keep a complete and balanced food as the foundation, and treat everything here as a small extra on top, not a replacement for meals.
2. Hold all the extras together to roughly ten percent or less of your cat’s daily calories, which is a smaller pile than most people picture.
3. Add one new thing at a time and give it a few days, so if your cat’s stomach objects you know exactly which food to blame.
4. Keep portions tiny, especially with liver, fish, and anything rich, since the foods with the biggest benefits also have the firmest limits.
5. Run any actual supplement, like fish oil, past your vet first, particularly if your cat has a kidney, heart, or weight issue, because dosing matters.

None of this is complicated once you stop thinking of “superfoods” as a thing you buy and start thinking of it as a few good extras you add carefully. A little salmon oil for the coat, a spoonful of pumpkin when the hairballs start, a warm shred of plain chicken when somebody’s being precious about dinner. That covers most of what a healthy cat actually needs from your kitchen, and the rest of the buzzwords can stay on the bag.