Great Apes
“All the great apes [in captivity] – which include chimpanzees, bonobos (pygmy chimpanzees), gorillas and orangutans – have learned American Sign Language.”
Whales & Dolphins
“We’re only starting to understand what it is they’re saying to one another. I believe when we ultimately learn what they’re talking about, it will be quite revealing.”
Elephants
“Elephants establish long-term friendships and recognise these individuals years later. When elephants come across a dead companion they recognise, they may outwardly grieve.”
Parrots
“I know a parrot in New York called N’kisi (a Congo-African Gray parrot) who knows 971 words. He isn’t counted as having a new word until he’s used it at least five times in a proper context.”