Love That Dog is by Sharon Creech, a Newbery Medal winning author. This book is a poetic tale about a boy named Jack who hates poetry. However, from the push of his teacher (Ms. Strechberry), Jack learns maybe he does have more to say than he thought and poetry is a great way for him to say it. Maybe this poetry thing is for him after all.
This is a great story to read to all ages, but great for children in grades 5-8 to read to themselves, and it is an excellent example of the powers of poetry. Written in free-verse, diary format this book shows how poetry can be a release, such as when Jack works through losing his dog, which is a great message to young readers, especially though reluctant about poetry.