Are whales placental mammals?
The placental mammals include such diverse forms as whales, elephants, shrews, and armadillos. They are also some of the most familiar organisms to us, including pets such as dogs and cats, as well as many farm and work animals, such as sheep, cattle, and horses.
Are placental mammals monotremes?
Mammals have about six thousand different species, or kinds, of animals in their group or class. Mammals can be divided into three more groups based on how their babies develop. These three groups are monotremes, marsupials, and the largest group, placental mammals. Monotremes are mammals that lay eggs.
What is the difference between Monotreme marsupial and placental mammals?
Monotremes are mammals that lay eggs. Monotremes are warm blooded with a fast memetabolism. Marsupials are hairy, warm blooded, and produce milk. One of the biggest differences between marsupials and placental mammals is that marsupials give birth quite early and rely less on the nourishment of the placenta.
What is the difference between marsupial and placental?
A marsupial is a mammal that raises its newborn offspring inside an external pouch at the front or underside of their bodies. In contrast, a placental is a mammal that completes embryo development inside the mother, nourished by an organ called the placenta.
Are there non placental mammals?
Monotremes and marsupials are non-placental mammals, meaning the young are not attached to the mother via a placenta. Monotremes are the most primitive type of mammal; their young hatch from eggs. Examples of non-placental mammals are koalas, opossums, kangaroos, the duck-billed platypus, and the spiny anteater.
Which order of organisms are the most intelligent?
Here are a few of the most intelligent animals that will might change your opinion of what being smart means.
- Smartest Animals: Chimpanzees.
- Most intelligent animals: Goats.
- Smartest animals in the world: Elephants.
- Smart animals: Dolphins.
- Smartest animals: Crows.
- Smartest animals in the world: Bees.