Rat Law says that if you're a rat, cheese belongs to you. But there are exceptions. For example, if a big rat wants it, cheese belongs to him. Unless a bigger rat wants it, or a quicker one, or a stronger one. And if a big, quick, strong, scary, hairy, dirty rat wants it, well . . . where does it end? A tumble of cumulative adjectives and a frenzy of hungry critters build up to a final note of politeness in a book sure to satisfy kids' appetites for zany humor.