List of Mammals

The mammals’ web panes of our web venue are an incredible mine of information on various species of mammals inhabiting Planet Earth. Read amazing actualities about this animal species characterized by body hair, 3 middle ear bones, sweat glands, neocortex brain region and their attribute of giving birth to young ones and nurturing them with milk from the mammary glands of the females.

Mammals are classified into three classes.


Their gestation periods are lesser than placental mammals. The progeny of these mammals are born juvenile. The females have characteristic pouches where the young ones sit attached to the mother’s nipple until they develop fully.


These mammals are prehistoric and oviparous. The young ones are nurtured on their mother’s milk. These oldest mammals are today confined to Australia and New Guinea. There are only 5 species of monotremes on Earth namely the duck billed platypus and 4 species of the spiny anteaters.

Placental mammals

The Placental mammals are also known as Eutherians and have approximately 4000 diverse species living on Earth. The offspring of these mammals are noshed through the placenta- an embryonic organ appended to the mother’s uterus- while they are in the mother’s womb. The young ones are born more developed than in marsupials and monotremes.

Some facts

The only marsupial that is naturally found in the United States is the Opossum. The marsupial population is however very dense in Australia which has numerous Kangaroos, Koalas, Tasmenian devils and wombats.

Marsupials have a placenta like placental mammals but it doesn’t play a major role in fetal noshing.

Blue Whale is a mammal and is known to be one of the biggest animal that ever existed on this planet.

Body temperature of mammals remains the same irrespective of the temperatures of their habitat, because they are warm blooded.

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