BUTT OR FACE?

Artfully cropped animal portraits challenge viewers to guess which end they’re seeing.

In what will be a crowd-pleasing and inevitably raucous guessing game, a series of close-up stock photos invite children to call out one of the titular alternatives. A page turn reveals answers and basic facts about each creature backed up by more of the latter in a closing map and table. Some of the posers, like the tail of an okapi or the nose on a proboscis monkey, are easy enough to guess—but the moist nose on a star-nosed mole really does look like an anus, and the false “eyes” on the hind ends of a Cuyaba dwarf frog and a Promethea moth caterpillar will fool many. Better yet, Lavelle saves a kicker for the finale with a glimpse of a small parasitical pearlfish peeking out of a sea cucumber’s rear so that the answer is actually face and butt. “Animal identification can be tricky!” she concludes, noting that many of the features here function as defenses against attack: “In the animal world, sometimes your butt will save your face and your face just might save your butt!” (This book was reviewed digitally.)

A gleeful game for budding naturalists.