What is the most intelligent dolphin species? - Quora
Porpoise vs. Dolphin: What's the Difference? - ESLBUZZ
Dolphins can identify their friends by taste, study shows for the first time
Dolphins Can Recognize Each Other By Taste of Their Urine, New Study Finds - One Green Planet
Watch dolphins line up to self-medicate skin ailments at coral 'clinics'
Dolphins Label Their Friends With Names
How Do Dolphins Choose Their Name?
Animal behavior: Dolphins recognize their friends by tasting their urine, Science
Dolphins can recognise their friends and family through taste, study finds
The Unexpected Reason Dolphins Taste Each Other's Pee
Deep Thinkers: Dolphins Have Big Brains, Use Tools And Show Creativity - The Dodo