Jeffrey Masson graduated from the Toronto Psychoanalytic Institute and was briefly Projects Director of the Sigmund Freud Archives. The book he wrote with Susan McCarthy on animal emotions, When Elephants Weep (1994), became a bestseller in the United States. Since then he has published nine books on animals and their emotions, including Dogs Never Lie About Love, The Nine Emotional Lives of Cats and most recently, The Dog Who Couldn't Stop Loving. He lives with his family in Auckland, New Zealand.