they have diff. no. of chambered heart
idunno
a bass is to fish as horse is to mammal
The whale is a mammal, not a fish. Both have fins, and live in water.Otherwise, they are totally different.
Mammal is to lungs as fish is to gills.
One is a fish, the other is a mammal
Mammal
It is a mammal.
ones big and ones small
shark is to whale as fish is to
It is a fish but it is also a mammal
No, the kangaroo is a marsupial or known as a mammal. A fish isn't a mammal.