Dolphins have Proper Names and call each other by name.
1) The animals name themselves "Earlier research found that bottlenose dolphins name themselves, with dolphins having a 'signature whistle' that encodes other information. It would be somewhat like a human shouting, 'Hey everybody! I’m an adult healthy male named George, and I mean you no harm!'"
2) "The new finding is that bottlenose dolphins also say the names of certain other dolphins.
'Animals produced copies when they were separated from a close associate and this supports our belief that dolphins copy another animal’s signature whistle when they want to reunite with that specific individual,' lead author Stephanie King of the University of St. Andrews Sea Mammal Research Unit told Discovery News."
