Ages 4-8.    Squash, who looks a lot like the vegetable, is an early-breakfast, lots-of-naps kind of cat. Maggie is a wake-up-late, wild-playdate kind of girl. Despite their differences, they are the best of friends. That is until one day Squash confuses Maggie's new toy for a dangerous beast and makes a terrible mistake. An unbelievably BIG MISTAKE. Now Squash is a can't-face-Maggie kind of cat, and Maggie is a wishes-she-had-her-toy kind of girl. But the thing about best friends is, one way or another, they always a way back to each other. 40 pages hc