Henry and Mudge and the Tall Tree House by Cynthia Rylant illustrated by Carolyn Bracken

Henry's Uncle Jake comes to visit.  This adventurous uncle helps Henry build an impressive tree house.  One problem Mudge cannot climb trees and Henry does not like being anywhere without Mudge.
Ms. Rylant is gifted in crafting a story that appeals to her reading ability audience.  The solution to this problem is a surprising one.
Good story to try to predict the solution.
-Borrowed from the library.
Guided Reading Level: J (2nd grade)
Grade Level Equivalent: 2.2