From The Ark by Margot Benary-Isbert:

“It was quiet and warm in the stall, and the air filled with the strong animal smell. The newborn creatures bleated with tinny little voices until the mother got up to let them suck. The first-born was already standing, although none too steadily. Now the second struggled to his feet also. Margret guided them to their mother, and with eager little bleats they butted their comical little heads against the swollen udder. There was a surprising vitality in the little creatures. In a moment they realized what had to be done to get at the warm, sweet milk. They began sucking greedily and swiftly, their stubby tails gaily dancing up and down.
“‘They’re better at milking than you are,’ Mrs. Almut said.
“‘Now I know why you have to knead and pat the udder when you milk; the young do the same. Listen to the way they smack their lips. Oh, Mrs. Almut, isn’t it marvelous?’
“‘It is!’ Mrs. Almut said. ‘People who don’t feel the marvel ought to let animals alone. Nothing does well if you don’t put your heart into it. Even the soil feels whether you like it or not.'”