Why did Wallaby kangaroos become pregnant throughout its youth?

Wallaby kangaroo has 2 wombs, each with its own ovary and cervix, making it possible to remain pregnant during adulthood. This species can even get pregnant just 1-2 days before giving birth to another baby in the womb.

Most mammals in the world can get pregnant several times throughout adulthood. However, most people need to pause this for a period of time after each birth. For some species, each female can produce only a few children in her lifetime.

But Wallaby kangaroos - animals that can be found throughout eastern Australia - are different. According to the latest research, published on March 2 in the journal Proceedings of the National Academy of Science, the animals could even conceive 1-2 days ago. give birth to another baby in the womb.

Brandon Menzies, co-author of the study and researcher at the University of Melbourne, said: 'Like marsupials, Wallaby kangaroos give birth to tiny children. These babies crawl to a special bag to breastfeed. Some marsupials, such as kangaroos, can mate and become pregnant about 1 day after birth. However, wallaby kangaroo is a rare species in the world that can conceive a day before giving birth to another baby in the womb '.

Wallaby kangaroos along with European hares are the only animals in the world that can conceive a new baby while pregnant with another. However, European hares have a separate breeding season and do not become pregnant continually during most of adulthood. Wallaby kangaroos can do that.

Wallaby kangaroo.

Researcher Brandon Menzies added: 'New conception during pregnancy is nearly impossible for mammals. Most animals have only one uterus and when one embryo is developing, there is no room for another embryo. However, Wallaby kangaroos have 2 wombs, each with its own ovary and cervix so new conception during pregnancy is what they can do easily. '

According to the researchers, the birth cycle of a female Wallaby kangaroo is very continuous. They usually mate in January and February, 1-2 days before giving birth to a pregnant baby. The newborn will go into the mother's pocket for care. The newly fertilized embryo , also known as the blastocyst , consists of about 80 to 100 cells that will remain in the uterus, dormant.

Meanwhile, the newborn will continue to be breastfed and grow up. By September, this "baby" will be ready to leave the mother bag. This is also the time coinciding with the spring in the southern hemisphere (Australia in the southern hemisphere) with lush green grass everywhere, good for the development of young Wallaby kangaroos.

At that time, the baby Wallaby kittens will need less care of the mother and by December they are weaned. Wallaby kangaroo will now start working in the uterus in its womb and 1 month later it will give birth to a new kangaroo. Before giving birth, they fertilize the new embryo.

Researchers found the female Wallaby kittens' pregnancy and delivery rules while monitoring them throughout the year. They found that the blastocysts of this species were inactive in 9/10 of the animals after mating and also while they had small babies feeding in the womb.

Wallaby kangaroos are small kangaroos, resembling Kangaroo but smaller in size. They are native animals, present throughout Australia, especially in the east.

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