From the creators of the bestselling hit This Book Is On Fire! comes a hilarious sibling showdown about learning to share... even when you really, really don't want to!Finn the Frog is used to being the star of the show--just him, the reader, and a story that usually goes exactly how he wants it to.But when his sassy little sister Fifi hops in for a visit, she's not just stealing the spotlight... she's hijacking the whole story! From pizza topping debates to TV remote battles, things quickly spiral into froggy chaos.Will Finn ever get his book back? Or will the reader have to step in and settle the score?This Book Is Mine! is a funny picture book for 6 year olds and a favorite for bedtime stories, classroom read-alouds, and sibling storytime. With bright illustrations and lots of playful bickering, this laugh-out-loud adventure delivers a gentle social-emotional lesson about sharing, forgiveness, and getting along.Great for boys and girls who love family humor, silly surprises, and interactive stories, this frogtastic tale makes a perfect gift for kids ages 3-8 and grades K-3.Order your copy of This Book Is Mine! today and dive into a wildly fun adventure about siblings, second chances, and finding joy in making space for others!Other Books in the Finn the Frog Collection: This Book Is Perfect!This Book Is On Fire!This Book Is A Mistake!This Book Stinks!This Book Is Viral!This Book Needs Color!