Danny Doodle's-The Dog Biscuit Breakfast by David A. Adler*

It took me many months for me to convince my eight year old to give this book a try!  He read it and liked it (but not as much as The Tales of a Fourth Grade Nothing which he just read).
Danny and his friend Calvin start a Rent-a Pet business so they can rent out Calvin's Aunt Ruth's dog which they are suppose to be watching while she is on vacation.  They struggle to find renters and learn from this enterprise!
My son said he did not like the illustrations because they were too messy (but Danny likes to doodle so the author is going with that theme.).
*Highly recommend.
We own this book.
Three total books in the series.
Perfect for transitional readers.