Sieb Posthuma’s Where is Rusty? is a treat for the eyes.  Posthuma’s illustrations are wittily creative and are the prize of the book.  Readers follow Rusty and his family as they enter a busy multi-floored department store to do some shopping.  Both the title and the mother’s guiding foreshadow what’s to come — Rusty wanders off.  Remembering the audience, Rusty doesn’t come across as too scared.  Instead, he’s inventive in how he’ll hide from the patrol watchdogs around the store while still looking for his mother.  The only lacking caveat is that there is no remorse in Rusty.  Instead of an apology when is mom is snuggling with him that evening at home, “…Rusty’s not listening.  He’s worn out and dreaming about the dog-biscuit machine.”  A simple “I’m sorry mom” would have gone miles with this reader.  Because of this, Where is Rusty is an additional purchase instead of recommended.