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Firefly & Fern is an independent platform. We are not affiliated with any publisher. We use affiliate links — when you buy through our links, we may earn a small commission at no extra cost to you.

Theme

body functions

Books about body functions for readers of all ages.

The good, the bad, & the gassy

Annie Auerbach

Ages 7–12humorscience

The slimy book

Babette Cole

Ages 4–8body functionshumor