Question

why is amphibious differ from mammalian

Answer 1

The main differences between reptiles and mammals is that reptiles don't have fur, are cold-blooded, and they lay eggs. Mammals do the opposite of those things.Amphibians are basically the same as reptiles except for the fact that amphibians live in water and land. Reptiles only live on land.

Answer 2

amphibians are cold blooded but mammals are warm blooded.
amphibians have three chambered heart but mammals have four chambered heart
and by many ways they differ from mammals since they belong to different classon basis of habitat,heart,outer covering ,etc