I read this book to my son for the first time last Tuesday. He grabbed at the holes, and I made crunching sounds. It felt perfect. Then I closed the book and realized I had no idea what I just told him.
We celebrate this caterpillar’s gluttony. He eats through chocolate cake and salami and a slice of cherry pie. He gets a stomach ache. Then he eats one green leaf and everything is fine. He spins a cocoon. He emerges as a butterfly. Everyone claps. But what did we actually learn? That overindulgence is a phase? That transformation requires suffering, or that it requires a nap? The book never says. It just shows us the holes.
The Caterpillar Who Never Explains Why
The caterpillar has no name. He has no personality beyond hunger. He hatches, he eats, he sleeps, he changes. That’s it. And yet, children remember him. They stick their fingers in the holes and pretend to be him. They learn the days of the week and the numbers one through five through his consumption.
I watched my son count the plums. Three. He did not ask why the caterpillar needed three plums after one apple. He did not question the sudden leap from fruit to processed food. He just ate the images with his eyes.
The book’s genius is that it never moralizes. The caterpillar does not learn a lesson about moderation. He gets sick, recovers, and becomes beautiful. The sickness is not a punishment. It is simply what happens when you eat too much. And the beauty is not a reward. It is just what happens next.

But here is the problem. The caterpillar’s transformation is presented as inevitable. Eat, grow, become. What happens to the caterpillars that do not make it? What about the ones that eat the wrong leaf? The book does not tell us. It is a success story without failure. And maybe that is necessary for a toddler. But for the adult reading it for the hundredth time, the silence around failure starts to feel loud.
The Hole That Swallows Everything
The holes are the book’s real innovation. They are not just for play. They are the physical representation of consumption. The caterpillar eats through the apple, and the hole remains. The page is permanently damaged. The food is gone, but the absence stays.
This is the core theme. Consumption leaves traces. The caterpillar eats. The page is never the same. We read the book, and we are changed. The holes are evidence that something happened.
Eric Carle’s collage style matches this. The colors are layered, rough-edged, imperfect. The butterfly on the final page is not a photograph. It is a construction. The caterpillar built himself from what he ate. The butterfly is the result of that building. The holes are the cost.
I wonder if children sense this. They put their fingers in the holes and feel what is missing. They do not know the word for absence. But they know it when they touch it.
The Butterfly We Never Talk About
The butterfly is beautiful. We all agree on this. But the butterfly does not eat. It does not crawl. It is not hungry. The hunger that drove the caterpillar is gone.
What does the butterfly do? It flies. It is admired. And then the book ends.
I think about this when I put my son to bed. He is hungry for everything. Food, attention, explanation. He wants to know why the sky is blue and why he has to sleep. I cannot answer all of his questions. But I can read him this book.
The truth is that we are all very hungry caterpillars. We consume and consume, and sometimes we get sick, and sometimes we recover, and sometimes we transform. But we do not know what we will become. The book does not tell us. It just shows us the butterfly and closes.
Maybe that is enough. Maybe the point is not the lesson. The point is the holes. The absence. The memory of what we ate and what it cost. The caterpillar becomes a butterfly, but the holes remain.
My son is asleep now. I will read this book to him again tomorrow. He will stick his finger in the hole where the strawberry was. He will not know that he is touching a metaphor for loss. He will just know that something was there, and now it is not. And I will try to be okay with that.