Niu Bao, the mother sheep, is a relative? ! Should I believe or wait?

Niu Bao, the mother sheep, is a relative? ! Should I believe or wait? The fortune teller said that cows can eat grass and sheep can only eat grass roots. Anyway, it is very inappropriate. I also know why I believe in this superstition, but I feel very uncomfortable. My husband is a monkey, he is a tiger, dizzy. After the Year of the Rabbit, he will be too old. Am I looking for trouble, alas.