Diary of a Wimpy Kid - Dog Days (Yellow) is the fourth book in Jeff Kinney's famous series. Greg Heffley's summer vacation begins, but his plans go awry. Greg dreams of spending the summer at home playing video games, but his mother has other plans. The book is filled with funny and comic situations that will bring a lot of laughter to the reader. It is an excellent choice for children and teenagers who are looking for an easy and fun read.