When animals are born, why don’t human babies have any viability?

There’s nothing harder to bring a cub than a human baby!

When we watch animal documentaries, we see many wild animal cubs walking when they are born, ponies that are born not long after they can feed with their mothers and elephant cubs who are born and migrate with their mothers, such as a baby elephant in a broken-nosed family, who goes north with their mothers when they are born.

There are also some animal cubs, although they are not able to walk at birth, also more attentive, such as: after the birth of birds, although can not fly, can not walk, but they are not so dependent on their mother, the mother only needs to provide them with food, they can grow up. Puppy dogs don’t need to be cared for as carefully as human cubs, even though they have just been born and can’t even open their eyes.

The exception is the human cubs, which not only need food from their mothers but also cry when they are thirsty, hungry, cold, or even uncomfortable. You know, humans have not always been at the top of the food chain in the evolution process, humans have had natural enemies, and human babies crying will attract the attention of natural enemies, in this case, why are human cubs so difficult to bring, rather than as good as other animal cubs?

Human evolution

The reason why human cubs are so difficult to bring is that the evolution of human beings, so that human cubs are destined to be more difficult to carry than other animal cubs.

An important node of human evolution is when humans begin to walk upright. The advantage of walking upright is that it is more energy-efficient, and some scientists have shown that walking upright consumes less energy than walking on all four limbs, which allows us to consume the same energy, and humans can walk farther and find more food, which is very beneficial to human survival.

But there is also a disadvantage of walking upright, that is, human sprint speed is not fast, it is difficult to escape in the mouth of natural enemies, but human evolution also retained a considerable period of time of tree-dwelling life, encountering wild animals can quickly run to the tree to escape.

Another disadvantage of walking upright is “increasing the rate of difficulty in yielding”. Scientists compared the pelvic bones of humans with apes and found that humans’ birth pathways were not only small but also rugged, meaning that humans would have difficulty giving birth.

On the other hand, as the brain volume of human evolution is increasing, increasing brain capacity makes it difficult for babies to pass through the narrow birth pathway, which also makes it very difficult for pregnant women to give birth, and even many women die when they give birth.

If you often watch the costume drama will know that pregnant women in the birth of children can be called “ghost door”, there are some women difficult to survive the threshold of fertility. Today, advances in modern medicine have reduced maternal mortality.

Because in the evolution process, human walking upright brought about by the narrow birth path, encountered by increasing brain capacity, so that pregnant women have a higher rate of a difficult birth. But as humans evolved, they retained a reproductive strategy: early birth, which allowed babies to be born before the skull was fully developed, greatly reduced maternal mortality. In other words, humans are actually premature babies.

Why are human babies so hard to bring?

Compared with other animals, because humans have not yet fully developed has been born, so human beings develop in vitro for a long time, and that is why, after birth, human babies can not be born like calves, lambs will run, all the needs of human babies need to be provided by parents.

In order to meet their needs, human babies will cry for help, whether thirsty, hungry, or pee will cry, although, in our view, the baby’s cry is the same, there are some mothers said that they can judge their needs through the cry of the baby, perhaps the baby’s cry will be adjusted according to the needs of different.

Maverick lambs do not use crying to express dissatisfaction, one is because they were born with a certain degree of self-care ability, on the other hand, because their living environment is very bad, if they cry, they are easy to be found and eaten by predators, so mavericks, lamb mothers if you want to leave the baby for a while, the baby will generally hide in the grass and do not move, even the sound will not make. It is precise because of this that some wildlife babies will be “forced to rescue”, for example, the baby hiding in the grass mistakenly thought to be abandoned by the mother of the animal cubs, and sent to the zoo to rescue.

Human babies can dare to cry because humans learned to live in groups very early, and also retained a long period of tree-dwelling life, even if the sound, natural enemies are difficult to prey on themselves;

But on the other hand, when humans are migrating, it is also very dangerous for babies to cry, so babies that cry are vulnerable to attack by wild animals, which is why babies who remain quiet during migration are naturally chosen.

Today, although humans are no longer constrained by predators, babies rarely make sounds as they move in their arms, which is why they are affected.

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