From termite mounds and caterpillar cocoons to the elaborate nests of social birds and the deadly traps of spiders, the constructions of the animal world can amaze and at times even rival our own feats of engineering. But how do creatures with such small brains build these complex structures? What drives them to do it? In this fascinating volume, Mike Hansell looks at the extraordinary structures that animals build--whether homes, traps, or courtship...