I feed ox,pig,lamb,heart,liver,kidneys,whole rabbits,pigeon,crow,magpie,the odd old chicken when they stop laying-anything and everything-other than the tree rats- an egg once a week-they do ok-never ever had deformed kitts-last litter of 11 they all lived-only thing ive seen they dont do well on is day old gassed chicks for the hawk-at the moment they tucking in to a munty head left over from the thl fishing comp-lol-you feed any animal the same day in day out it will suffer they need a good balance.