"Diary of a Fly" by Doreen Cronin is a humorous juvenile fiction book published by HarperCollins in 2007. This hardcover book features illustrations by Harry Bliss and tells the story of a fly from its perspective. With a focus on social themes such as friendship, this book is sure to entertain readers with its witty and engaging narrative. At 40 pages long and measuring 10 inches in length, 7.5 inches in width, and 0.2 inches in height, this book is a delightful read for young audiences.