There is no fundamental difference between man and the higher mammals in their mental faculties. Human beings are organically related tom animal. Animals do have all the representative power and talent of human beings. Animals do have curiosity, emotions, attention, imitation, memory, imagination, reason. An attempt to say that animal lack the mental power is the silly and faults attempt. Charles Darwin is the first naturalist and scientist who rejected divine story behind the origin of Homo sapiens. The primary purpose of Charles Darwin is to put both animals and human beings on the footing of emotions and intellectual quality.