Hopefully someone here can help. I've switched Hazel(the cat) over to raw. But I do have a question in all the reading I've done on feeding raw with cats. Says that cats need a source of Taurine which comes in poultry hearts. But nothing tells me how much she will need. Do I need to give her a chicken/ poultry heart a day? I don't want to give her less than she is going to need.