The book provides recent scientific information on mammals including their characteristic features, origin and evolution, distribution, zoo-geography adaptive radiation especially in limbs, teeth, integument, reproduction etc. The volume discusses 311 species of 156 genera belonging to 12 orders. The volume is profusely illustrated with line drawings, figures comprising black & white and colored plates to make it a lucid presentation. Following topics are covered in this book. Animal Kingdom, The Chordates, The Mammals, Indian Mammals, Adaptive Radiation in mammals, Reproduction, Classification, Systematic Enumeration of mammals of the order Insectivora, Chiroptera, Proboscidea, Sirenia, Pholidota, Lagomorpha, Perissodactyla, Artiodactyla, Rodentia, Carnivora, Cetacea and Primates.