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The wonder of nature has given birth to all kinds of strange things, and today we are going to talk about one of them, the kangaroo. We often see on TV that the kangaroo has a magical pocket and its children are often in it, so what is this pocket all about?
This pocket is called the Parenting Generation, and it is where the baby kangaroo stays. This type of mammal with long belly pockets is not only kangaroos, but there are also many other animals in Australia, such as koalas and marsupial eagles. Kangaroos are mammals, just like us humans.
Baby kangaroos also start out like most mammals, but due to the incomplete structure of the kangaroo placenta. Baby kangaroos don't get enough nutrients in their mothers. Therefore, they are born early before they are fully developed, and their bodies are only a few centimeters long.
After the baby kangaroo is born, it needs to rely on its own strength to climb into the mother's nursery belt, and the forelimbs of the kangaroo, which are equivalent to our arms, will develop better than the rest of the body. So they can climb into the pouch.
However, the wallabies do not stay in their pockets all the time, and when they grow up, they can come out occasionally and live completely independently within a year. So are all animal pouches in front? Not necessarily, kangaroos' pouches are open forward, as kangaroos often stand on their hind legs.
This way it won't fall off when jumping. But the koala's pouch is open backwards because they need to dig holes in the land. If you open your mouth forward, the dirt will fall into the bag and bury the baby.
There are more than 300 species of marsupials in the world, but they all look very different. Some of them resemble rats, some koalas, and their living environments are also different. Some live in the grass and some in the trees.
But they all have a common feature of the pouch. It is very likely that they shared a common ancestor, and later migrated to different parts of the world as the earth's environment changed, and slowly evolved little by little in order to adapt to the local environment. Fossils of marsupials have also been found in our country, indicating that they once lived with us, and to be kind to animals is to be kind to us humans.
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The kangaroo mother's pouch is equivalent to a second uterus, providing a safe and comfortable environment for the wallabies to grow up. The nursery pouch is the sweat gland of the kangaroo mother. Sweat glands release antimicrobial substances that keep baby kangaroos safe from viruses, bacteria, and parasites.
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Kangaroo pouches have survived a long period of natural selection, and pouches provide protection and nutrition to kangaroos in early childhood.
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The kangaroo mother has it, and the father doesn't have to feed the baby, so there is no pouch on the belly. I only found out from reading my son's storybook, so I'll lend it to you first.
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