Mammal is any member of the class of warm blooded vertebrate havingfour limbs execpt for come aquatic species and distinguished from other chordate classes by the females milk secreting glands and the presence of the hair at some stage of development.Other unique characteristic include a jaw hinged directly to the skull hearing through bones in the middle ear a muscular diaphragm separating the pectoral and abdominal cavaties and nonnucleated mature red blood cells.Mammals range in size from the tiny shrew to the enormous blue whale monotremes lay eggs:all other mammals ber live young.Marsupial newborn complete their development outside the womb sometime in a pouchlike structure. Mammal secret the milk to their young baby.They have well develop mammary gland.Mammal are warm blooded animal.They cannot change their body t emperature according to their environment.Blue whale give birth to the young one.
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