Illustrations and rhyming text explore the fun and mayhem that could ensue if elephants, kangaroos, bats, and more were to come inside a little boy's house. Interest Level: K-3 Reading Level: 2.3 ATOS Book Level: 2.6 AR Interest Level: LG AR Points: .5 AR Quiz: 151147EN Lexile Measure: AD520 Lexile Code: AD (Adult Directed) Fountas & Pinnell: L.