Yes, by definition cetaceans are an order of mammals.
the answer is not "who" but actually "what are" Cetaceans are marine mammals
There is no such animal. All cetaceans (whales and dolphins) are carnivorous. You may be referring to the manatee or the dugong which are both marine mammals and herbivores. However, they are not considered to be cetaceans.
They have hair
underwater mammals
Dolphins are mammals, specifically they are cetaceans.
All cetaceans use echolocation, and that includes all species of whales and dolphins.
Yes, they do; the sub-class Eutheria (placental mammals) includes all orders of mammals except monotremes (platypuses and echidnas) and marsupials (opossums, kangaroos, etc.). Cetaceans (whales, dolphins and porpoises) are included.
Cetaceans, Pinnipeds and the like.
Whales, dolphins and porpoise.
Cetaceans have only vestigial hind limbs.
Cetaceans are marine mammals of the order Cetacea which includes whales, dolphins and porpoises.
Yes, they do; the sub-class Eutheria (placental mammals) includes all orders of mammals except monotremes (platypuses and echidnas) and marsupials (opossums, kangaroos, etc.). Cetaceans (whales, dolphins and porpoises) are included.