In a briefer companion volume to Cats Are Cats (1988), 25 selections from such familiar poets as Milne, Prelutsky, Valerie Worth, and Patricia Hubbell. Despite their diminutive appeal, mice don't seem to elicit the humor or true poetry of their traditional antagonists; while pleasant and mildly entertaining, this verse is predictable and lacks the range of the earlier book. But the new Caldecott medalist's spare illustrations--in mouse grays and browns warmed with touches of brighter color--are beautifully observed, with such creatively imagined effects as a mouse peering through a thick glass bottle or perched aloft on an oar (Ciardi's ""The Light-House-Keeper's White-Mouse""); the mice climbing about on the jacket's elegant lettering are also a delight. In Larrick's companionable introduction, the name of E.B. White's famous mouse is misspelled: ""Stewart Little."" A beguiling contribution to the poetry shelf.