Salmon Oil for Dogs and Cats: Benefits, Dosing, and What to Look For

Šapice Pet Wellness
2026-04-04T17:36:22-04:00

Salmon oil is one of the most evidence-backed supplements for pets, supporting skin, coat, joints, heart, and brain health through concentrated EPA and DHA omega-3 fatty acids.
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Salmon oil is one of the most widely recommended supplements in veterinary nutrition — and one of the few with a robust body of clinical evidence behind it. Rich in omega-3 fatty acids EPA and DHA, it supports everything from skin and coat health to joint function, cardiovascular health, and cognitive performance. For Canadian pet owners, it's also one of the most practical daily supplements available: easy to administer, well-tolerated, and effective across a wide range of conditions.

Here's a complete guide to what salmon oil actually does, how to use it, and what to look for when choosing a product.

What Are Omega-3 Fatty Acids?

Omega-3 fatty acids are essential fats — meaning the body cannot synthesize them and must obtain them through diet. The two most biologically active forms for dogs and cats are:

EPA (eicosapentaenoic acid) — the primary anti-inflammatory omega-3; directly inhibits inflammatory pathways at the cellular level

DHA (docosahexaenoic acid) — critical for brain, eye, and nervous system development and function; particularly important for puppies, kittens, and senior pets

Most commercial pet foods are heavily skewed toward omega-6 fatty acids (from chicken fat, vegetable oils, and grains), which are pro-inflammatory in excess. Salmon oil corrects this imbalance by providing concentrated EPA and DHA.

Proven Benefits of Salmon Oil for Pets

Skin and Coat Health

This is the most visible and commonly reported benefit. EPA and DHA support the integrity of the skin barrier, reduce transepidermal water loss, and decrease the inflammatory response that drives itching, flaking, and redness. Most owners notice a shinier coat and reduced shedding within 4–6 weeks of consistent supplementation.

Allergy and Itch Relief

Environmental and food allergies trigger inflammatory cascades that manifest as itching, hot spots, and skin irritation. Omega-3s modulate these pathways, reducing the severity of allergic responses. Salmon oil is frequently recommended alongside veterinary allergy treatment as a safe, long-term adjunct.

Joint Health and Mobility

EPA directly inhibits the enzymes that degrade joint cartilage and drive the inflammation associated with osteoarthritis. Multiple clinical studies in dogs have demonstrated improved mobility scores and reduced pain with omega-3 supplementation. It pairs particularly well with green lipped mussel powder for comprehensive joint support.

Cardiovascular Health

Omega-3s reduce triglyceride levels, support healthy blood pressure, and have anti-arrhythmic effects. This is particularly relevant for breeds predisposed to cardiac conditions, such as Cavalier King Charles Spaniels, Dobermans, and Maine Coon cats.

Brain and Cognitive Function

DHA is a structural component of brain cell membranes. Supplementation supports cognitive development in puppies and kittens, and helps slow cognitive decline in senior pets — a condition increasingly recognized as canine cognitive dysfunction syndrome (similar to dementia in humans).

Kidney Health

Research in cats with chronic kidney disease (CKD) has shown that omega-3 supplementation can slow disease progression by reducing inflammation in kidney tissue. It is one of the few supplements with evidence-based support for feline CKD management.

Our Salmon Oil

KRWN Atlantic Salmon Oil — our premium cold-pressed salmon oil, sourced from Atlantic salmon and processed at low temperature to preserve the full EPA and DHA profile. Suitable for dogs and cats of all sizes.

Salmon as a Whole-Food Complement

For pets who benefit from salmon as a treat or training reward alongside oil supplementation:

Wild Pacific Salmon Training Treats 170g — single-ingredient wild Pacific salmon treats; a natural whole-food source of omega-3s ideal for training

Wild Pacific Salmon Training Treats 680g — the bulk option for multi-dog households or frequent trainers

How to Use Salmon Oil

Pump or pour directly over food — most pets find the flavour highly palatable

Start with half the recommended dose for the first week to allow digestive adjustment

Dose by body weight — follow the product label; general guidance is approximately 20mg combined EPA+DHA per kg of body weight daily

Store in the fridge after opening to prevent oxidation

Allow 4–6 weeks for full skin and coat benefits; joint benefits may take 6–8 weeks

What to Look for in a Salmon Oil

Cold-pressed or low-temperature processed — heat destroys omega-3s; processing method matters

Clear sourcing — know where the salmon comes from; Atlantic and wild Pacific salmon are preferred

No added fillers or preservatives — pure salmon oil only

Antioxidant stabilisation — vitamin E (tocopherols) added to prevent rancidity is acceptable and beneficial

Pump or airtight packaging — minimizes oxidation after opening

Is Salmon Oil Safe?

Salmon oil is extremely safe for long-term daily use in dogs and cats. The most common side effect is loose stools when first introduced or when the dose is too high — easily managed by starting low and building up. It should not be given to pets on blood-thinning medications without veterinary guidance, as omega-3s have mild anticoagulant effects at high doses.

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