Do you mean that cats are not greedy or that you have cooked cats? I find that you have a problem with your ability to express words. You can buy that kind of small fish in the market, wash it when you come back, drain the water, spread it on the wall of a pot, put it on a coal stove, and leave it overnight without opening the oven door. The small fish will turn into dried fish, and the dried fish will turn into fish powder the next day.