For dogs, cats and horses, Pure Arctic MSC Fish Oil is a good omega-3 nutritional supplement. It has a high dose of EPA and DHA and is made from fresh Arctic wild fish. Liquid fish oil in a bottle with dosing syringe. Cheaper salmon oil that is often given to pets and is made from farmed salmon contains roughly as much omega-3 as omega-6. We offer a better dose that is hardly oxidised and contains much more omega-3 than omega-6.