Answer. To understand the evolutionary chain of the human species, the study of mammalian features are extremely important. Moreover, humans are now economically dependent on mammals for food and clothes. Such an economical relationship is so important to compensate for the food crisis due to overpopulation. Mammals play a vital role to make balance in their corresponding ecosystems. Rapid extinction of mammals is noticed due to global warming.  The International Union for Conservation of Nature (IUCN) prepared a list of endangered species which need to be protected, the list is known as the red data list. Such endangered mammals are to be reserved artificially. Such rapid extinction needs to be controlled as soon as possible to maintain the balance of the ecosystem. According to IUCN data, there are 679 endangered mammalian species. Such information about mammals is alarming. The endangered mammalian species involves Royal Bengal Tigers, Asiatic Lions, Rhinoceros, Bears, etc.