because males have penis and females feed milk to their children
Dolphin,Whale
Shark is to fish dolphin is to mammal.
yes
Yes the killer whale is a mammal ! The killer whale is a cetacean and is a dolphin in the group delphinidae.
a dolphin is a marine mammal, part of the toothed whale family.
a dolphin or whale
whale, dolphin
The largest mammal in the dolphin family is actually the Orca whale (also known as the killer whale).
Dolphin, or maybe a primitive marine mammal.
The mammal dolphin (there is a fish with that name) can be tamed. The biggest dolphin in the world is the Killer Whale/Orca and it can be tamed.
do you mean dolphin? (as in the mammal smaller than a whale that lives in the sea)
A dolphin is a mammal and not a fish.