Spring 2026

The Secret of Poo Mountain

Book 4

From the Series Whose Poo Is This?

  • Interest Level: Grade 2 - Grade 5
  • Reading Level: Grade 2

Dr. Egg, Dr. Yang, and Dr. Woong face their biggest challenge yet. They must climb the tallest mountaintops and search the deepest forests for the fabled Golden Poo. Along the way, they’ll learn about animals living in these mysterious habitats through the spectacular science of poo. But Poo Boy is up to his old tricks, so the three heroes will need to put all the poop-y clues together to solve this mystery once and for all.

Format Your Price Add
979-8-7656-2764-8
On pre-order until 03/03/2026
$21.99
979-8-7656-2765-5
On pre-order until 03/03/2026
$12.99
979-8-7656-7545-8
On pre-order until 03/03/2026
$32.99
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Interest Level Grade 2 - Grade 5
Reading Level Grade 2
Genre Graphic Novels, Science
Copyright 2026
Publisher Lerner Publishing Group
Imprint Graphic Universe ™
Language English
Number of Pages 88
Publication Date 2026-03-03
Text Type Informational Fiction
BISACS JUV008050, JUV029000, JUV002000
Dewey 591.47/9
Dimensions 7 x 9
Guided Reading Level T
Features Fast facts, Original artwork, Sidebars, and Table of contents

Author: Park Song-eui

A dreamer who sees life like a comic book due to her love for manhwa, Park Song-eui creatively adapts the entertaining story ideas from Dr. Egg into fantastic books. Her notable works include Dr. Egg’s Collection Diary, Selfie Explorers, Math, and Bundle of Thoughts.

Illustrator: Kim Duck-Young

In crafting entertaining and educational comics for kids, Kim Duck-Young adds an extra layer of cuteness to the feces of creatures in Dr. Egg’s Whose Poo is This?! He has illustrated numerous works, including Sul Min-seok’s Easy Korean History, Secret Agent Leonard, and Britannica Comic Encyclopedia.