Roly Poly the polar bear loves being the only child. His bed is his alone, as are any fish he catches, and his prized walrus tooth. Then one morning he finds a stranger sharing his bed—his new baby brother Monty. "But I never asked for a little brother, and I don't want one now!" Mem Fox tells the tale for readers 4 to 6 in short, simple sentences that capture the complicated feelings of sibling rivalry, while Jane Dyer (also her illustrator for Time for Bed) creates felted wool puppets and miniature scenes to enact the story in an irresistibly cuddly way.

"Fox's spare text demonstrates her deep understanding of a youngster's intense emotions, subtly showing Roly Poly's growth from a self-centered toddler to a big brother who can take responsibility."—Kirkus Reviews (starred review)