No. Placental means a type of mammal, and mammals are vertebrates, meaning they have a backbone and an entire internal skeletal structure. Insects do not have a backbone, and are therefore invertebrates.
No. There are no insects which are placental.
A rabbit is a placental mammal.
The aardvark is a placental mammal.
A cow is a placental mammal.
Most mammals are placental...marsupial mammals and monotremes are not placental.
No,octopus are not placental, they are cephalopad.
a jaguar is a placental
Yes, vicuna are placental.
Placental.
Terrestrial placental mammals do have fur or hair. Marine placental mammals do not.
No. Primates are a group of placental mammals, but there are many placental mammals that are not primates.
Yes. A mouse is a placental mammal.