The animal covers are great branding by O'Reilly... it subconsciously signals me that the book is of high quality due to experience with other high quality "ani

The animal covers are great branding by O'Reilly... it subconsciously signals me that the book is of high quality due to experience with other high quality "animal cover" books. It takes away the friction of a random cover on a book that you are interested in and having to do research to figure out if the book is any good.