10 Best Dog Fish Oils 2025 in the United States

The Wild Alaskan Salmon Oil Formula for Dogs & Cats by Zesty Paws is a liquid food supplement designed to support skin, coat, joint function, immune, and heart health in pets. One of its strengths is the high concentration of Omega-3 and Omega-6 fatty acids, particularly EPA and DHA, which are crucial for maintaining a healthy coat and overall well-being of your pet. This product is manufactured in FDA-registered facilities in the USA, ensuring a level of trust and quality control. The oil is derived from wild Alaskan salmon, which is a high-quality source known for its nutrient-rich profile.

Additionally, the product is flavored with salmon oil, making it easy to incorporate into your pet's diet as a tasty treat. On the downside, as a liquid form, it might be a bit challenging to measure out the exact dosage for pets, and there is potential for messiness during administration. The 8.5-ounce bottle might also not last very long for larger pets or households with multiple pets.

This supplement is ideal for pet owners looking for a high-quality, Omega-rich oil to enhance their pets' skin and coat health, though the liquid form may require careful handling to ensure accurate dosing.

Nordic Naturals Omega-3 Pet fish oil is a high-quality supplement designed specifically for large to very large dogs. Each teaspoon provides 1518 mg of omega-3 fatty acids, which are essential for promoting heart, skin, coat, joint, and immune health. The oil is derived from fresh, wild-caught fish and comes in liquid form, making it easy to add to your dog's food. This ensures optimal absorption as it is in the triglyceride molecular form, which is the natural form found in fish.

The product is unflavored, which might be a plus for dogs with sensitive palates but could also be less appealing to picky eaters. One of its major strengths is its commitment to purity: it is made with non-GMO, gluten-free, and dairy-free ingredients, and it contains no artificial colors, flavors, or preservatives. Additionally, Nordic Naturals follows ethical and sustainable practices, which can be a significant factor for environmentally-conscious pet owners.

The product is also Friend of the Sea certified and produced in a zero-waste facility powered by biofuel. A potential downside is the need to refrigerate after opening and use within three months, which might be inconvenient for some users. Users looking for an easy-to-administer, high-quality omega-3 supplement for their large dogs will likely find this product beneficial.

The Fish Oil for Dogs by Vital Pet Life is an all-natural supplement designed to improve your pet’s skin and coat health. Packed with essential Omega-3 fatty acids like EPA and DHA, this product is beneficial for pets suffering from dry skin, itching, and shedding. It comes in a liquid form, making it easy to mix with pet food. Suitable for various pets including dogs, cats, ferrets, and horses, it supports not only healthy skin and coats but also joint and bone health, reducing inflammation and enhancing overall wellbeing.

The fish oil is sustainably sourced, which is a big plus for environmentally conscious pet owners. The product is proudly Women-owned, Family-owned, and US-owned, with globally sourced ingredients to ensure top quality. Given its form and ease of administration, it suits all breed sizes and is particularly beneficial for pets with skin and joint issues. Users should start with half the recommended dosage to avoid any potential gastrointestinal upset.

The 64 oz size offers good value for long-term use, but it might be cumbersome for those with storage limitations. This fish oil supplement can be a great addition to your pet’s diet, especially for those looking for sustainable and high-quality health support.