Krill Oil For Dogs: Problems And Alternative

Krill Oil For Dogs: Problems And Alternative

Alex Seilis

Krill oil has gained a lot of attention as a popular supplement for dogs, especially due to its rich content of omega-3 fatty acids. Many dog owners and veterinarians praise its benefits for supporting heart health and overall well-being.

However, while krill oil may seem like a beneficial addition to your dog's diet, it's important to consider the broader implications of its use.

Below, we'll share why krill fish oils might not be the best choice for your canine companion or the environment, and offer sustainable alternatives that can provide the same health benefits without the negative ecological impact.

What Are Krill?

Krill are small, shrimp-like crustaceans that play a crucial role in the Antarctic ecosystem. Growing up to 2.4 inches in length and weighing about 0.071 ounces, these tiny creatures are a primary food source for a variety of marine animals, including whales, seals, fish, and birds like the albatross and petrels.

Krill are abundant, with an estimated biomass of 500 million tons, making them the most plentiful animal species on Earth. Female krill can lay up to 10,000 eggs per day, helping to maintain their population.

Krill are essential to the survival of many marine species. Whales alone consume about 794 million tons of krill annually, while penguins and other sea life rely heavily on this crucial food source.

Beyond their role as a food source, krill also contribute significantly to controlling greenhouse gases. They feed on phytoplankton, which absorb carbon dioxide from the atmosphere. When antarctic krill dive to escape predators, they excrete carbon dioxide into the deep ocean, effectively sequestering it and reducing atmospheric carbon levels.

Given their ecological importance, the overharvesting of krill raises serious concerns. With the increasing demand for krill oil supplements, it's essential to evaluate whether using krill oil for dogs is truly necessary or if there are more sustainable alternatives that can provide the same health benefits without depleting this vital marine resource.

Why Is Krill Oil So Popular?

Krill oil has gained immense popularity as a supplement, primarily due to its rich content of omega-3 fatty acids. Omega-3s are essential for many bodily functions, and they offer numerous health benefits, including supporting cardiovascular health, support a healthy inflammatory response, and promoting brain function.

Unlike other marine sources of omega-3s, krill oil is thought to be more bioavailable, meaning the body can absorb and utilize it more efficiently compared to other fish oils, like salmon oil, for example.

One of the main attractions of krill oil is its position lower on the food chain. Krill, being small and short-lived, accumulate fewer toxins such as mercury, heavy metals, and other pollutants compared to larger fish like salmon and tuna. This makes krill oil a seemingly safer choice for both humans and pets.

Krill oil is also marketed for its antioxidant properties, particularly due to the presence of astaxanthin, a powerful antioxidant that gives krill their reddish color. Antioxidants help protect the body from oxidative stress and free radical damage, further enhancing the appeal of krill oil as a supplement.

But this popularity has led to intensified krill fishing and harvesting, which poses a threat to the delicate Antarctic ecosystem. As krill populations dwindle due to overfishing and climate change, the marine species that depend on krill for sustenance, such as whales, penguins, and seals, are also put at risk.

Does Your Dog Need Krill Oil?

Krill oil is celebrated for its rich content of omega-3 fatty acids, specifically EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid). These key fatty acids are essential for maintaining your dog’s overall health.

They support brain function, promote cardiovascular health, and contribute to healthy skin and coat. EPA, in particular, is known for supporting a normal inflammatory response, while DHA is crucial for neurological development and function.

However, while the nutritional benefits of EPA and DHA are clear, dogs do not specifically need krill oil or a krill oil supplement to obtain these nutrients.

There are several other sources of omega-3 fatty acids that are equally beneficial and more environmentally sustainable. Choosing one of the sustainable alternatives to krill fish oil below can help support your dog’s health without contributing to the ecological issues associated with krill harvesting.

3 Sustainable Alternatives To Krill Oil

1. Green Lipped Mussels

Green lipped mussels are a fantastic alternative to krill oil. Native to the clean waters of New Zealand, these mussels are a rich source of EPA and DHA. Additionally, they contain ETA (eicosatetraenoic acid), another omega-3 fatty acid that supports normal inflammatory responses.

Green lipped mussels are farmed sustainably, making them an environmentally responsible choice. They also offer the added benefit of being rich in glucosamine and chondroitin, which can support joint health.

2. Hempseed Oil

Hempseed oil is derived from the seeds of the hemp plant and is an excellent plant-based source of omega-3 and omega-6 fatty acids. It has a balanced ratio of these essential fatty acids, which is crucial for maintaining overall health.

Hempseed oil also contains gamma-linolenic acid (GLA), an omega-6 fatty acid that supports skin health. As a renewable and sustainable resource, hempseed oil is a great choice for environmentally conscious pet owners.

3. Ahiflower Oil

Ahiflower oil is a relatively new but promising alternative to traditional fish and krill oils. This plant oil is rich in stearidonic acid (SDA), a precursor to EPA, and provides a highly efficient conversion pathway to beneficial omega-3 fatty acids.

Ahiflower oil also contains GLA, making it a comprehensive source of essential fatty acids. It is sustainably grown and harvested, providing a low-impact alternative to marine-based omega-3 sources.

Final Thoughts

Krill oil definitely offers nutritional benefits for dogs, primarily through its content of EPA and DHA. However, the environmental impact of krill harvesting and the declining krill populations make it a less than ideal choice. Fortunately, there are sustainable alternatives such as green lipped mussels, hempseed oil, and ahiflower oil that provide similar benefits without the ecological drawbacks.

By choosing these alternatives, you can support your dog’s health while also protecting marine ecosystems. Making informed decisions about pet supplements not only benefits your pup but also contributes to the preservation of our planet’s biodiversity. So please opt for sustainable options, and let's be a part of the solution to overfishing and environmental degradation!


Is krill oil okay for dogs? Krill oil provides essential nutrients like EPA and DHA, promoting healthy skin and joints, but overharvesting of krill biomass makes it an environmentally unsustainable choice. Consider alternatives like green lipped mussels or hempseed oil for your dog's food.

What are the cons of krill oil? The cons of krill oil include the depletion of krill biomass, potential environmental damage, and the lack of significant benefits over more sustainable alternatives that can also support your dog’s healthy joints and immune system.

What is krill oil used to treat? Krill oil promotes healthy skin, supports healthy joints, and supports the immune system in dogs, thanks to its content of omega-3 fatty acids (an essential nutrient) and the antioxidant astaxanthin.

What fish oil is best for dogs? For a sustainable and effective option, green lipped mussels are considered one of the best fish oils for dogs, providing essential nutrients that support a dog's body, including healthy joints.