Super Jumbo, by Fred Koehler; Dial Books, $16.99, 32 pages, ages 3-5.

What child doesn’t imagine saving the world? How many more children have engaged in a heroic act (saving ants from a giant’s wayward foot, for example), without recognition? In Fred Koehler’s second picture book featuring Little Jumbo, the caped, wrench-welding, pint-sized pachyderm fights crime (keeping his dad out of the cookie jar), assists the weak, and shoos annoying pigeons away from popcorn ‘dropped’ by an unsuspecting elderly park visitor.  Unfortunately, sometimes Little Jumbo’s actions cause more chaos than intended. What happens when he’s faced with a real call for help? This tale of a well-meaning elephant with outsize ambitions is a charming, simple read aloud, and is a perfect match for Koehler’s illustrations of a small but mighty hero.