Why do lambs kneel and suck milk? What is the reason?

From the point of view of molecular biology, because the ancestors of sheep are herbivores, they must have long legs to avoid enemies faster, so they must kneel down and eat it when drinking milk. In the long run, this growth habit gene will be passed on to domestic sheep today. But at the same time, people who have raised sheep know that sheep have inherited another growth habit, that is, hitting their heads on the abdominal cavity of dairy sheep when drinking milk. This may not be a sign of gratitude, right? In fact, this, like "crow feeding back", is an unknown scientific and reasonable assumption in ancient times. This practice extends an idiom called:

The lamb kneels and suckles. At present, lambs kneel on their breasts to express their gratitude to their parents. Because the breasts of dairy sheep grow behind and between the hind feet, a relatively narrow condition is set for lambs to drink milk. Sheep can't sleep on their side like other mammals and let lambs drink milk. You can go and have a look. When a sheep lies down, its milk will be crushed by itself, so it has to stand and eat it. Even if we can make do to ensure that the lamb sleeps sideways and drinks milk, the lamb can only eat on his knees. The growing habit of a sheep is that no matter what he does while lying down, he must kneel down first.

In this photo of yours, only the lamb has found the best relative height and the most comfortable posture to eat its stomach. If mutton doesn't go in, it's not breast meat at all. However, lactating dairy sheep are fat and big, and their bellies are closer to the ground. So lambs with long hands and feet are forced to kneel. The story of "lamb kneels for milk" has been circulated for thousands of years, not to pay attention to the fact that lamb really kneels for milk, but to be intriguing-why lamb kneels for milk. Filial piety is the traditional virtue of China culture. What we have to do is not talk about filial piety, but practice it.

In this period when the pace of life is getting faster and faster, how much time can everyone, as a child, spare to wait for their parents, and how many rooms can their parents wait for? People always sigh that "children want to raise but don't care about their relatives", and they only know how to cherish when they lose them. Although parents don't want to repay their children, they can't take it for granted. It is not just "fostering relatives" that is filial piety. "Today's filial piety is to soothe the nerves and raise dogs and horses. Why not?" Mom and dad must mean dribs and drabs, waiting for them