Lamb Liver per bag Contains one of the best, most usable sources for the body, of iron. Iron is necessary for many functions in the body including formation of hemoglobin, brain development and function, regulation of body temperature, muscle activity and catecholamine metabolism, to name just a few. A lack of iron will have a direct effect on the immune system; it diminishes the number of T- cells and the production of antibodies. Only Small amounts are required to assist in giving a rounded diet for our companions. Should only be feed every other day and test with your companion how much, as most small dogs will only need 10mm square before they get very loose stools. Best to increase the size slowly till you see a difference and reduce then you are aware, only upto 5% of the companions diet. These products can come frozen / fresh depending on when it is ordered. When we pack them we freeze them straight away. Make this part of your Brisbane Delivery of Raw Pet Food.