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What does eutheria mean?
Eutheria is a subclass of mammals that includes placental mammals, which give birth to live young that have been nourished in utero by a placenta. Eutherians are the most diverse and successful group of mammals on Earth, and they include humans, elephants, dogs, and whales.
What are the three kinds of mammals?
The Monotremes, Marsupials, and the largest group, Placental Mammals.Monotremes are mammals that lay eggs. The only monotremes that are alive today are the spiny anteater, or echidna, and the platypus.Marsupial's young are born in an extremely immature state; most female marsupials have pouches. Some marsupials include the koala, kangaroo, and the numbat.Placental Mammals are the most familiar group (meaning us), but also contains a diverse group of organisms from rats to dogs to horses.
What are some environments that placental mammals live on?
Placental mammals live in almost every environment on Earth. They are one of the most successful groups in the animal kingdom. Mammals in general are very successful and the majority of mammals are placentals. This group is so successful because they are endothermic. The only mammals that are not placentals are the marsupials (kangaroo, opossum, etc) and the prototherians (egg laying mammals). Environments that do contain mammals would likely be constrained to those that are very severe: The deep ocean, extremely high mountain peaks, etc. Otherwise you can find these animals almost anywhere.
Are otters Monotremes?
No, otters are not monotremes. Monotremes are a group of egg-laying mammals that include the platypus and echidnas. Otters are classified as carnivorous mammals in the family Mustelidae, which also includes weasels, badgers, and martens.
Mammals that retain their young within the body of the mother for a long period of time are called?
Placental mammals retain their young within the body of the mother for a long period of time. Humans, dogs, bears, and mice are all examples of placental mammals.Mammals which do not retain their young for a long period of time are marsupials, all of which have short gestation periods (e.g. kangaroos, koalas, Tasmanian devils, wombats, etc) and monotremes (platypuses and echidnas), which are egg-laying mammals.
Do placental mammals have fur?
Terrestrial placental mammals do have fur or hair. Marine placental mammals do not.
Are placental mammals and primates are same?
No. Primates are a group of placental mammals, but there are many placental mammals that are not primates.
Define placental mammals?
placental mammals are the most famous mammals
What are examples of placental animals?
Most mammals are placental...marsupial mammals and monotremes are not placental.
Are shrews placental mammals?
Yes. Shrews are placental mammals.
Are rabbits placental mammals or monotremes?
A rabbit is a placental mammal.
Are Bottle Nosed Dolphins placental mammals or marsupial mammals?
Dolphins are placental mammals.
Is a whale a marsupial?
Seals are placental mammals, as the young complete their development within the mother's uterus, attached to a placenta. They do not have a pouch like most marsupials, and they do not lay eggs like monotremes.
Does a bat have a pouch?
Neither. Bats are placental mammals, so they neither have a pouch, nor do they lay eggs.
Is a leopard a placental mammal?
Yes, leopards are placental mammals as are most mammals.
Are most mammals placental?
Most mammals are placental. In Australia, however, almost all mammals are marsupials.
Why is placental mammals an ancestor for human and cats?
Human and cat are themselves placental mammals .
