Give characters of class mammalia.
General characteristics of class mammalia:
- These animals are warm blooded, hairy and have mammary or milk producing glands, (mammary glands). They are the only animals which nourish their young ones with milk.
- They are homoiothermous (warm blooded).
- Oil glands (sebaceous glands) and sweat glands (sudoriferous glands) are present in the skin.
- Teeth are of different types (heterodont) and are embedded in the sockets of jaws (the codont).
- The heart is four chambered.