The One Thing Missing From Your Pet’s Bowl
The supplement gap that shows up in almost every pet's diet — regardless of what they're eating.
Here’s what I know.
It doesn’t matter if your dog or cat eats kibble, raw, gently cooked, or anything in between. There is one nutrient gap that shows up almost universally — and it’s silently driving inflammation in pets everywhere.
DHA and EPA. The long-chain omega-3 fatty acids that your pet’s body cannot make on its own.
These two compounds are responsible for brain function, joint comfort, heart health, skin and coat condition, kidney protection, and immune regulation. And the research backs this up — a systematic review published in PMC covering 23 randomized controlled studies found measurable therapeutic benefits of EPA and DHA supplementation across canine allergic dermatitis, joint disease, heart conditions, and cognitive decline. This isn’t emerging science. It’s well established.
So why are almost all pets deficient?
Kibble destroys omega-3s before they ever reach your pet’s bowl. The high heat used in processing oxidizes fragile fatty acids, turning them into inflammatory compounds rather than therapeutic ones. And even if you’re feeding fresh or raw, unless you’re intentionally including fatty fish or a quality marine supplement, the omega-6 to omega-3 ratio in your pet’s diet is likely wildly out of balance. Research confirms that the lowest omega-6 to omega-3 ratio with measurable anti-inflammatory effect is around 5:1 — yet the modern commercial pet diet routinely runs far higher than that.
That imbalance is pro-inflammatory. And chronic inflammation is the root of nearly every disease we see in dogs and cats today.
One more thing that trips people up — plant-based oils do not solve this problem. Flax, chia, hemp, coconut, olive oil — these contain zero EPA or DHA. Both dogs and cats lack sufficient enzyme activity to convert plant-based ALA into the EPA and DHA their bodies actually use. This is confirmed by the National Research Council, which lists EPA and DHA as dietary requirements for both species precisely because conversion from plant sources is so poor. You need pre-formed marine sources.
What to add to your pet’s bowl:
Wild sardine or anchovy oil — highly bioavailable, affordable, widely available. Look for third-party tested, molecularly distilled options in dark bottles. Smaller fish like sardines and anchovies also minimize mercury exposure compared to larger species.
Krill oil — excellent absorption, naturally contains astaxanthin for added antioxidant support
Phytoplankton — my personal favorite, especially for cats. Sustainably sourced and delivers broad spectrum marine nutrition at the cellular level. Four Leaf Rover makes a quality option.
Algal oil — the best choice for pets with fish allergies. Research in both dogs and cats confirms it’s safe, bioavailable, and carries no risk of marine allergens or heavy metal contamination.
A practical starting point for dosing — a 16-week randomized trial found that approximately 70mg of combined EPA and DHA per kilogram of body weight daily meaningfully improved pain scores and quality of life in dogs. That’s a reasonable maintenance target to discuss with your integrative vet. Refrigerate liquid oils after opening and use within 30 days to prevent oxidation.
Pain scores in that same study were reduced by 38% in small dogs and 30% in medium dogs PubMed Central — from omega-3 supplementation alone. Let that sink in.
This is one of the simplest, most evidence-supported changes you can make for your pet starting today. Not next month. Today.
If your pet is managing a specific health condition, dosing matters. Connect with an integrative vet who can look at the full picture and tailor recommendations for your animal specifically.