Muscle like a rope
When the mother koala takes the baby koala.
The female koala will tighten the muscles under the eyes like a rope.
Fasten the bag; So, in any case,
No matter how the koala moves.
Will not fall out. This can refer to the following article: "The biggest feature of marsupials is that the female has a pouch under her abdomen. Some marsupials, such as wombats and koalas, have their baby bags open downwards, while kangaroo's baby bags open upwards. The muscles in the baby bags are very elastic, so that the baby kangaroos in the baby bags will not fall out. " My thesis. Pchome/news/Lovely/3/1276908857/20061217023231/"Like kangaroos, the female koala's pouch is in the abdomen, but the kangaroo's pouch is open upwards, while koala's pouch is raised. Why? Because koalas crawl around the trunk all day with their mouths facing down, they won't hurt koalas in their bags! However, big families don't have to worry that koalas will fall out, because the baby bag has muscles similar to pulling straps, which can seal the bag tightly! Therefore, this can protect the young baby, and I am not afraid that the baby will fall out when running. " (Bud/Winnie/W SHOW04 koala.wing/page1.ht) Q: As for the koala pouch, why doesn't it tilt up like a kangaroo?
But mouth down? A: There is another reason: through research, it is found that this has a lot to do with the growth of koalas. When the koala grows to a certain extent, it is convenient to stick its mouth on its mother's ass, where there is mother's excrement-half-digested eucalyptus leaves. When koalas are 22-30 weeks old, female koalas will excrete a semi-liquid soft food from their intestines for koalas to eat. This kind of food is very important, not only soft, koala is easy to eat, but also nutritious, containing more water and microorganisms, easy to digest and absorb. This kind of food will accompany koalas through the important transition period from breast milk to eating eucalyptus leaves until koalas can eat eucalyptus leaves completely, just like human babies will eat porridge semi-liquid food for a while before eating solid food. For koalas, those secretions are not difficult to swallow, and they can also supplement the "nutrition" it needs during its growth. Other references: travel.163/06/092112 rhn059q0061q75 koala (koala) comprehensive introduction _ Baidu knows picture reference: img.epochtimes/i6/6051008422.