Little Worrysaurus has a big day planned, but will his fears get in the way of his perfect picnic?After going through his morning routine, Worrysaurus packs up for the day and heads out into the world with nothing but blue skies and his planned picnic on his mind. However, it doesn't take long for worry and doubt to start to set in. Did he bring enough food? Enough to drink? When he runs across a lizard who is sure it is going to rain, a "little worry butterfly" begins to flutter in Worrysaurus' stomach. He's not prepared for rain. As the worry butterfly flaps harder, he remembers something his mommy told him: "Don't you worry now, my lovely, / you MUST try not to fret. / If it's not a happy ending, / then it hasn't ended yet." Feeling better, Worrysaurus goes through his bag of "happy things" and is able to enjoy the rest of his day. This sweet title will help little human worrysauruses feel as though they are not alone, and it also offers coping tools for when fear and doubt start to take over. Chatterton's illustrations depict an unthreatening pink theropod with an oversized head (and rather distractingly large nostrils) and effectively convey emotion through color: Happy moments are rendered in bright colors while fearful ones have darker spreads. Easy rhymes with good meter make this fun to read aloud. (This book was reviewed digitally with 11-by-20-inch double-page spreads viewed at 36% of actual size.)A welcome addition to the emotional-literacy shelf. (Picture book. 3-6)