Why can many animals walk right after birth but humans cannot?

Why can many animals walk right after birth but humans cannot?

In many animal documentaries, newborn antelopes and wildebeests can stand up within a few minutes, newborn elephants can stagger around and learn to walk, and even newborn monkeys, both primates, can already The hair of the female monkey can be grasped as the mother jumps up and down without being shaken off, but why is it that when human babies are just born, they are wrinkled and wrapped in quilts, and they can’t even open their eyes?

This makes people confused, why do many newborn animal babies look so strong and can stand up and walk quickly, but human babies cannot? It starts with the birth of a human mother.

Are all human babies “premature”?

During human delivery, only when the diameter of the female pelvic opening is larger than the biparietal diameter of the fetus, can the fetus’ head pass smoothly through the pelvis and be delivered smoothly. However, the normal diameter of a woman’s pelvic opening is about 10 to 13 centimeters. If the fetal head circumference is too large, it may lead to difficult labor and other phenomena, and even affect the life and health of the mother and fetus.

However, the width of the mature human head is about 17 centimeters, which far exceeds the maximum opening of the female pelvis. This means that a fully mature head cannot naturally pass through the female pelvis and be born normally. of. Studies have shown that if the biparietal diameter of the human fetus is about 8.5 cm during delivery, normal delivery can be achieved. Although this reduces the risk of dystocia, it also means that the fetal skull is not fully developed at this time.

In addition, in the long process of evolution, humans have gradually acquired a high degree of wisdom and power, and the living environment for babies has become better. Human babies can obtain a safe and stable growth environment and sufficient food. They do not need to quickly adapt to the environment and learn to avoid natural enemies like animal babies in order to grow smoothly. In addition, the current average life span of humans exceeds 70 years, which is far longer than the average age of ordinary animals. Human babies have enough time to grow and develop, and there is no need to rush. But correspondingly, compared with the early maturity of the brain and lifespan of animal babies, human babies are naturally like “premature babies.”

What makes animals different from humans

In addition to the immaturity of infants, the cruel environment of nature is also an important reason for the gap between the two.

First, young animals live in a more dangerous natural environment and the food chain is more complex. Animals at the bottom of the food chain need to have a certain ability to protect themselves from birth, or at least be able to run quickly to escape; while animals at the top of the food chain also need to have the ability to move quickly to hunt in order to ensure survival.

Secondly, many animals do not take equal care of all their young when they breed. When food is limited, the young that are weak and cannot compete for enough food will not survive to leave the nest independently. Instead, they will die of cold and starvation early and be naturally eliminated.

Finally, the average life span of most animals is much shorter than that of humans, and they also grow several times faster than humans. Therefore, there is indeed a big difference between animal babies and human babies in terms of whether they can stand up when they are born.

Best time for baby to walk

Normally, it is more appropriate for human babies to practice standing and walking after 10 months and 1 year old respectively. Standing and walking too early or too late will have a certain negative impact on the child’s physical development.

Studies have shown that children walking too early will affect many aspects of physical development.

Affects vision: The eyes that are not fully developed cannot resist the child’s curiosity to explore distant places, which may cause excessive use of the eyes and cause the child to suffer from high myopia at an early age.

Affects the spine: Since the spine of babies under 1 year old is not fully mature, walking too early will increase the burden on the spine, causing problems such as chest hunchback when they grow up.

Affects leg shape: The baby’s bones lack calcium salts, making the bones of the baby’s limbs, especially the lower limbs, very fragile and easily deformed after being stressed. If you learn to walk too early, the bones of the lower limbs will easily deform due to pressure, causing the baby to grow into “O”-shaped legs or “X”-shaped legs.

Therefore, there are different reasons why human babies walk late and animal babies walk early. We must respect the laws of their respective development and pay attention to their own physical development.

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