Here Comes Santa Cat by Deborah Underwood

Christmas is coming, and Cat has a hunch he's not on Santa's "nice" list. But Cat knows what to do—dress up as Santa! What better way to be sure he gets a present? "Instead of being Santa," the narrator gently suggests, "why don’t you just try to be nice?” Doubtful at first, Cat quickly warms to the holiday spirit, but his attempts at gift-giving, caroling, and tree-decorating go hilariously awry. There are wonders still in store, though, and this holiday, Cat might surprise even himself with his capacity for generosity.