老ㄌㄠˇlǎo牛ㄋㄧㄡˊniú舐ㄕˋshì犢ㄉㄨˊdú

老牛愛護小牛。比喻人私愛子女。《後漢書·卷五四·楊震傳》：「愧無日磾先見之明，猶懷 老牛舐犢之愛。」

英lit. an old ox licking its calf (idiom), fig. (of parents) to dote on one's children