Because this fish oil is 100% wild-caught, it is a pure source of omega 3. The EPA and DHA fatty acids have an anti-inflammatory effect. 
It works against a dull coat and flaky skin. In addition, it contributes to the function and development of the brain.
It is therefore also good for young, pregnant and older dogs.
Dogs with osteoarthritis may also benefit from sardine oil due to its high concentration of omega 3.

Sardine oil is also a good supplement for cats. Rich in taurine and good for skin, coat and joints.