20. Flax Seed (milled or oil)
This is a good source of omega-3 fatty acids that are good for skin and coat. Whole flax seeds are best if ground right before feeding as this type of fat can go rancid quickly.
Flax seed can also be added to your dog’s diet as a source of fiber. Flax oil is a more concentrated form of omega- 3 fatty acids without the fiber. Make sure that you store the oil or seeds in the fridge in an air tight dark container.