Consider this category of organs to be true superfoods; these are nature's vitamins & mineral supplements for your dog's and cats! Don't overdo it, but please be sure to include them as part of an overall balanced diet - it is crucial to not avoid this essential category of foods!
We recommend adding 5-10% of the total ration for raw feeding properly, and 5% of should be liver, ideally.
For home-cooked diets, you can bump this up to 10-20% of the total diet/menu.
Secreting organs are any of various organs or cell groups, such as the glands, liver, kidney, spleen, that are of endothelial origin and secrete a substance that is used or excreted by the body.