I have 3 cats. Ages 10(smudge) , 8(jack) and 4(abby) . They are all on wet food only with only 1 of them(Jack) eating some commerial raw foods and a little raw chicken wing and liver. Smudge will also eat a little chicken/liver. Abby still won't have anything to do with most raw food. My question is, how much liver is safe to feed them during the week. I know there is already vitamin A in their wet food and in the raw since the raw has liver in it also. I just started them on liver maybe 5 days ago. They have gotten appx. 2 oz of liver in that time. I really can't figure out how much they can have without it being too much. Thanks for any help!