Big Cat, Little Cat

A 2018 Caldecott Honor book There was a cat who lived alone. Until the day a new cat came . . . And so a story of friendship begins, following the two cats through their days, months, and years until one day, the older cat has to go. And he doesn't come back. This is a poignant story, told in measured text and bold black-and-white illustrations about the act of moving on.