Question

what is the difference in the structure of bird and amphibians

Answer 1

Amphibians - need to be constantly wet to survive, can breathe underwater AND on land, lay eggs, ectothermic. Examples: frogs, toads, ceacilians, salamanders and newts

Mammals - Have some sort of fur, do not lay eggs (however there are some exceptions), not ectothermic. Examples: humans, hamsters, dogs, cats, whales and lions.