Zoo

Zoo is written at a Level 5 reading level. Strong independent readers around grade 6.0 can typically handle this book on their own; with parent or teacher support, Zoo works for readers up to grade 7.0.

We rate Zoo as 10ME ("Moderate — Emotional") because the content sits in the "Moderate" range — moderate conflict that may involve loss, scary scenes, or interpersonal stakes. The strongest signals come from emotional weight, physical peril — these are the dimensions parents should evaluate against their reader's tolerance.

Specific content flags noted by reviewers: Mild Peril.

Thematically, Zoo explores adventure, horror, neurodivergent characters, and animals — these threads give the book room to mean different things to different readers.