This is a look at the issue of animal emotions through the combined support of scientific information and field observation. The book addresses the fundamental issues in the field: What are the basic areas of animal mental experiences? Can we draw a line that separates species that experience emotion from those that do not? How far have science and technology progressed towards confirming what many people, including researchers, already believe? The chapters cover areas of emotion, fear, happiness, parental love, courtship and much more. Each chapter begins with an overview, which is then followed by a series of commentaries by animal behaviour and cognition experts.