Dolphins can remember each other's 'name' whistles for twenty years:
'Dolphins are able to remember one another's signature calls for at least 20 years making it the longest memory for "faces" among animals--perhaps even surpassing the ability of people to remember one another from their appearances alone. Every dolphin has a unique whistle which is used as a signature-call and stays with them unchanged throughout life. '
'Dolphins are able to remember one another's signature calls for at least 20 years making it the longest memory for "faces" among animals--perhaps even surpassing the ability of people to remember one another from their appearances alone. Every dolphin has a unique whistle which is used as a signature-call and stays with them unchanged throughout life. '