It is supposed that man was evolved on earth about 15 lakh years ago. This man was
evolved from the monkey who started to move by standing erect on his feet. Such man has
been called Homo erectus (or) Java man. Later on Java man transformed into Cro-Magnon and
Cro-Magnon into modern man. The modern man is zoologically known as Homo sapiens (Homo
– Continuous, Sapiens – learning habit). In the beginning such man had been spending his life
wildly, but during the period 8700-7700 BC, they started to pet sheep and goat, although the
first pet animal was dog, which was used for hunting.
