Here's why:
* Target Audience: Peg books are designed for very young children (usually babies and toddlers), making them a part of the Early Childhood category.
* Format: They are sturdy board books with holes that allow for interactive play with pegs. This reinforces the board book format.
* Content: Peg books often feature simple shapes, colors, and objects that are appropriate for young children.
* Purpose: Their purpose is to engage young learners with tactile exploration and early concepts like color, shape, and matching.
While "peg book" isn't a distinct genre itself, it's a specific format within the larger category of Early Childhood or Board Books.