http://news.bbc.co.uk/1/hi/scotland/edinburgh_and_east/4750471.stm Some scientists of US found out the exciting fact that dolphins do communicate each other by calling their own
http://news.bbc.co.uk/1/hi/scotland/edinburgh_and_east/4750471.stm Some scientists of US found out the exciting fact that dolphins do communicate each other by calling their own