Mammals, like humans, umbilical cord It gets nutrients through it. Therefore, of course, it is possible to see this hole in a monkey.

What about? cat, dog and other creatures?

Many living things even have navels.

The only difference is that they are not large and visible enough for you to notice them all. animalsare divided into groups depending on how the embryos develop. We know the first group intimately; the embryo gets the nutrients it needs in the uterus from the placenta.

In the other group there are people who lay eggs. You will understand that the creatures in this group do not have a placenta to provide their offspring with the nutrition they need. like birds by laying eggs Reproductive animals develop inside the egg, with an embryo and yolk providing nutrients during their development process.

Egg yolk provides the nutrients necessary for the growth of the embryo.

However, these animals do not turn yellow when they are born. They cannot take it orally. Instead, as the embryo develops inside the egg, it attaches to the yolk via a structure called the ‘egg stalk’.

when it suits this nutritional connection forms and shrinks over time. So hatched animals actually have a belly button, but this scar is so small that it is almost impossible to see it with the naked eye.

Animals that give birth by laying eggs (ovoviviparous) have a different stage of development.

In these species, the embryo develops in an egg, but the egg remains in the mother. The mother does not release these eggs until the babies are born. Instead, the eggs hatch inside the mother and the babies are born alive. snakes, lizards and ovoviviparous animals, such as some marine animals, do not feed directly from their mothers via the umbilical cord.

Instead, it absorbs the nutrients in the yolk sac.egg stalkIn these species there is a navel scar, but because the developmental process of the animal is different, this scar is not as clearly visible as in mammals.

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