no they dont
A Polar bear is a Placental mammal. The young of Placental Mammals are born at an advanced stage after being nourished by the placenta.
Zebras are placental mammals. Like all placental mammals, they give birth to live young. The only types of mammals that lay eggs are the platypus and the echidna.
Raccoons are born alive, they are placental mammals.
No. There are three types of mammals: monotremes, marsupials, and placental mammals. Monotremes lay eggs, marsupials give live birth to very undeveloped young, which must attach to the nipple (possibly in a pouch), and placental mammals give live birth to much more developed young. A polar bear is a placental mammal.
No. Mammals are divided into three infraclasses: monotremes, marsupials, and placental mammals. A giraffe is a placental mammal. This means that the baby is born live, and that it is born developed enough that it will not have to immediately crawl onto the mother's nipple and attach itself. In fact, baby giraffes can walk seconds after being born.
Mammals whose young are nourished by a placenta in the womb and are born able to move around independently. Pouched mammals are non-placental and their young must live in the pouch till developed.
Monotremes (Monotremes are primitive, egg-laying mammals)Marsupials (Marsupials are mammals whose babies are born very immature)Placental mammals (Placental mammals are advanced mammals whose unborn young are nourished through a placenta)
Placental Mammals.
Aardvarks are placental mammals, with babies born alive.
Raccoons are mammals so they are born alive
Marsupials, monotremes and placental mammals are all sub-groups of mammals. They share the following characteristics:vertebrateswarm-bloodedhave fur, skin or hairbreathe through lungs (not gills)the young feed on mother's milkThe major differences, however, include:monotremes are the only mammals which lay eggsmarsupial young are born undeveloped and continue most of their growth and development whilst they are in the mother's pouch, attached firmly to the teat for several months, where they receive all their nutrients.
No. Mice are placental mammals, meaning they give birth to live young. The only egg-laying mammals (monotremes) are platypuses and echidnas.