The world’s greatest expert on these animals, Dr Hal Whitehead of Dalhousie University in Canada, who has studied them over 20 years, says they exhibit emotions such as joy and grief, and live in complex societies.
The world’s greatest expert on these animals, Dr Hal Whitehead of Dalhousie University in Canada, who has studied them over 20 years, says they exhibit emotions such as joy and grief, and live in complex societies.