Bullfrog

Susan Heinrichs Gray

Cover of Bullfrog

Bullfrog

Age Rating, Reading Level & Content Guide

by Susan Heinrichs Gray

21st Century Skills Library: Animal Invaders

Reading Level 5-6 Gentle (Lvl 1) Ages 9-12 Balanced Read Page-Turner

The text is written at a 5th grade reading level, the subject matter is intended for middle graders (ages 9–12), and the content is gentle with no concerning themes.

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About This Book

Discover the fascinating world of bullfrogs, giant frogs with big appetites that can eat everything from birds to other frogs. Follow their journey from native North American habitats to becoming a widespread invader that threatens local wildlife. Learn about the challenges they pose and the efforts underway to control their expansion.

Themes

Science & NatureEnvironmental AwarenessAnimals

Quick Assessment

This is a Level 5-6 book with gentle content intensity. No notable content concerns flagged. Written for readers ages 9-12.

For Parents

Content Intensity

Level 1 — Gentle
Gentle Mild Moderate Intense Very Intense

No conflict beyond everyday childhood experiences. Safe for sensitive readers.

Data confidence: standard

Was our "Gentle" content intensity rating accurate for this book?

Reading Insights

Hook Factor

7/10

High engagement — fast-paced, fun, and hard to put down. Great for reluctant readers.

Discussion Potential

1/10

A lighter read — great for independent enjoyment.

Book DNA

Multi-dimensional content fingerprint

Vocabulary Level
4
Emotional Weight
2
Narrative Pace
7
Theme Richness
3
World Scope
1
Data Confidence
8
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Details

Book Length

32 pages
2,733 words
18m read-aloud
ISBN
9781602793279
Pages
32
Publisher
Cherry Lake Publishing
Published
2009
Type
Nonfiction
Word Count
2,733
Read-Aloud
~18 min
Text Density
Light Text

Genres

Juvenile Nonfiction

Subjects

Bullfrog