Answer:
Features of mammals
1) Mammals have fur or hair, which protects them from sun and cold.
2) Mammals are warm-blooded animals.
3) Female mammals have mammary glands which are structures that make milk to feed to their young.
4) Mammals take care of their young.
5) Mammals have 3 middle ear bones that helps give them good hearing.
6) All mammals have backbone.
7) Mammals have legs but some have fins or wings.
8) Mammals breathe using their lungs
8) Examples : Humans , bats , rats , mice , gorilla , dogs , cats , whales etc.
Properties exclusive to mammals but present in other vertebrates :
1) Birds have feathers , claws while mammals dont't have it.
2) Reptiles skin is dry and scaly while mammals dont't have it.
3)Amphibians doesn't have any exoskeleton while mammals have hair , nails etc.
4) Fishes have slimy scales while mammals dont't have it.
5) Fishes has gills to respirate while mammals dont't have it.
6) Fishes , amphibians and reptiles are cold-blooded animals while mammals are warm blooded.
