Crenshaw

In her first novel since winning the Newbery Medal, Katherine Applegate delivers an unforgettable and magical story about family, friendship, and resilience
Jackson and his family have fallen on hard times. There's no more money for rent. And not much for food, either. His parents, his little sister, and their dog may have to live in their minivan. Again.
Crenshaw is a cat. He's large, he's outspoken, and he's imaginary. He has come back into Jackson's life to help him. But is an imaginary friend enough to save this family from losing everything?
Beloved author Katherine Applegate proves in unexpected ways that friends matter, whether real or imaginary.