Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
5.3
Points
1.0
Fiction/Nonfiction
Nonfiction
Word Count
3775
Points per Word
0.000265
Page Count
32
Points per Page
0.03125
Description
Animals build an incredible variety of structures in which to sleep, raise their young, or catch prey. Some animals dig in soil or wood. Others build underwater or attach structures to plants.