Supplementation with fish oils (omega-3 fatty acids EPA and DHA) is important because they cannot be made in the body. They are needed for healthy functioning of the immune system, skin and coat, joints, heart, kidneys, brain, eye, and GI tract. Commercial pet foods do contain omega-3 fatty acids, but usually inadequate amounts due to processing.

Fish oil supplements range widely in terms of quality. Things to consider when choosing a brand of oil:

1. Purity – free of contaminants like mercury, lead, PCBs, etc.
2. Freshness – minimized oxidation throughout processing
3. Taste – fishy smell or taste can mean poor manufacturing
4. Triglyceride Form – natural form has increased absorption
5. Third-Party Testing – guarantee for purity, freshness, and quality
6. Sustainability – responsible fishing and production