Description
There are many animals that have extincted and many are due to extinct because of the greed of man. Man has used the flesh, bones, skull, horms nails and other parts of the animals for food, medicines and also for fashionable goods. In effect many animals on the earth are no more. The whole species has extincted and only fossils or pictures of them are avialabe. The writer G.B. Sardesai has given information about many such animals which had been allve on the earth but are not found at any part of the world today. Some other animals are also on the way of being extincted and so deliberate efforts to help them to live is an urgent need.
Nisargatil Vidnyan 
Hitopdesh Chaturya Sutre 