The reason is:
(1) cattle. I have eaten grass all my life, but I have squeezed out milk. I have worked for the benefit of all beings all my life. It tastes terrible.
(2) mullet. People usually say:' mullet essence is the most hateful, even their own children eat it.' However, Shi Tian Daoyou said the opposite. They think that mullet can't see anything but starve to death in spawning season; Mullet pups are the most filial. They would rather swim to their mother's mouth to feed her than starve to death. Their spirit is too precious to eat.
(3) Hongyan. Widowed and lonely goose, living alone all her life, in a bleak situation, determined never to marry again, with commendable spirit, should not be eaten.
(4) dogs. Throughout the ages, people often say:' A son is not too ugly for his mother, and a dog is not too poor for his family'. Serve the Lord all your life, and do not eat it. "
See the reason for not eating cows, dogs and geese in the Ten Commandments of Virtual Yellow Sky: "If cows are meritorious, dogs are righteous, geese are the order, and carp and eels are fighting. Is this meat safe to eat? " Ten Commandments of the Truth in the Beginning of the Virtual Emperor Buddha is a Taoist book in the Song Dynasty. It explains that cows, dogs and geese don't eat because they have merits and are reluctant to eat, but it doesn't give them more ethical significance.