Burningham and Oxenbury team for a poignant treatment of a preschooler's ambivalence about a forthcoming new sibling. The dialogue couples Mommy's benign suggestions about the baby's future exploits with her son's far less equivocal, here-and-now replies. She muses, "I wonder if the baby will work here at the zoo one day, looking after the animals." He rejoins (a twinge, one hopes), "Then the baby might get eaten by a tiger." The elegant text type (Polymer) is coolly pale for Mommy's comments, bold-faced for her boy's. The lovely ink drawings are digitally colored in flat, muted hues accented with rich reds. To dignify and celebrate the boy's robust imaginative flights, double-page spreads, each with eight panels reminiscent of old-timey comics, depict the baby painting messily, maneuvering a sailboat or raking leaves in Parks and Rec jammies. The seasons turn, Mommy gets bigger and, finally, Grandad and boy walk down a hospital corridor, gift and flowers in hand. Heavy paper, generous trim, amusing endpapers and, above all, beautifully evoked relationships combine for a winning package. (Picture book. 2-6)