No. All eels are fish, which are cold-blooded animals (poikilotherms) that do not nurse their young.
fish, small mammals, birds and amphibians
Neither. Eels are not herps (amphibians or reptiles). Eels are a type of fish.
Whales are aquatic mammals, not amphibians.
Fish
Eels are not amphibians, they are type of fish. But they can survive out of the water for some time. when migrating they will cover long distances over land if they have to and conditions are suitably wet.
no salamanders are amphibians mammals have hair, amphibians do not
Mammals.
They are mammals.
No, treefrogs are amphibians, not mammals.
Bisons are mammals.
Amphibians are naked while mammals possess hair on skin .
Dolphins are mammals.