Little Boo is the best! Until Little Boo is the worst...Why couldn't Big Boo have a little witch or even a little vampire for a younger sibling? A picture book featuring a pesky little sibling paired with gentle social emotional learning--perfect for Halloween or any time of year when a new baby arrives and brings change.When the antics of their little sibling start to get to Big Boo, they decide to trade for a friend's younger sibling, Little Howl. At first this seems like a great idea, but soon enough Big Boo finds that the grass isn't always greener and Little Howl is a whole new level of monster. This sweet and humorous story about sibling relationships acknowledges the frustrations but, ultimately, the love that comes with a new addition to the family.