My son received this board book for his second birthday a little over a year ago. I had seen it online, and had requested this book in physical format for him. A friend gave it to him, and it soon became a favorite book in our household. We liked it so much that we presented it to my cousin and her soon-to-be-born daughter earlier this year.
The little character in this book is never identified as a boy or girl. My son thinks it is a little boy like himself, and we let him think that. In a Persian translation of another book in this series by Patrcelli, the character seems to be named "Chil-Chil", so we call him/her by that name in our household.
In the course of the book, the main character sees how the family pets go potty, and finally he/she tries going potty, too.
In terms of the success of this book within our household? We love to read this book, and for a little someone, reading it on the potty is great fun.. Reading readiness is high in our now three year old. With the actual potty issue? Not yet!