Fish oil is a concentrated fat from oily fish such as salmon, anchovy, sardine, or menhaden and is sold as liquids, pump bottles, capsules, and soft chews. It is used in pet supplements because it supplies EPA and DHA omega-3 fatty acids. These fats may support skin, coat, and joint health when the dose matches the pet.
Products vary widely in concentration and may include mixed oils, flavoring, or added vitamins, so label details matter. Liquid oils are usually poured over food, while capsules are punctured or swallowed whole. Human products are not always ideal for pets because strength and additives can differ.
Oxidized oil loses quality and may smell fishy or paint-like, which is a sign to discard the bottle. Capsules can leak if chewed and create high-fat hotspots in one meal. Store products cold and sealed to slow rancidity.
Fish oil is still a fat source, so excessive amounts may cause vomiting, diarrhea, greasy stool, or unwanted weight gain. Use measured, pet-formulated products and follow veterinary dosing guidance.
