The scientific field which focuses on the study of the behavior and mental processes of non-human animals is referred to as comparative psychology. The researches conducted this area deal with various issues and use different methods to explore the behavior of many different species ranging from insects to primates. It emphasizes upon cross-species comparisons such as comparisons between humans and animals. A comparative approach to behavior helps evaluating the target behavior. One of the major areas of study in this field is animal cognition. It seeks to understand the mental processes which control complex behavior. This book outlines the processes and applications of comparative psychology in detail. It presents researches and studies performed by experts across the globe. Those in search of information to further their knowledge will be greatly assisted by this book.