Elephants are a family of placental mammals in the order Proboscidea. They were formerly classified, along with other thick-skinned mammals, in the now invalid order of pachyderms. There are currently three species and several subspecies.

Marsupials are a class of mammals. Therefore, like all mammals, they have in common that their reproductive process takes place inside the maternal womb and that, once born, they are suckled with breast milk, which constitutes their only food until they are sufficiently developed to feed themselves. themselves in another way.

The most common is that mammals, during their gestation period inside the maternal womb, feed through the placenta, which has the function of supplying food to the fetus from the mother's blood. These mammals are called placental mammals and are the most common that can be found.

However, there is another class of mammals that does not complete its development inside the maternal womb, and these would be the marsupial mammals. In this case, the young marsupials are born before they have completed their development. However, in order for them to complete it and survive, once they leave the womb, they move into the so-called bag, which is nothing more than a bag that mothers have placed on the front of their bodies. and where they have the mammary glands.

More Info: www.britannica.com