At some time in their lives, if not throughout them, animals need homes. To
accomplish this they have become potters and plasterers, weavers and and
needleworkers, miners, masons, thatchers and sculptors.
Like humans, they worry about the costs of home repair, deterring unwanted
guests and keeping the weather out. Prairie dogs, reduce the stiffness of
their burrows with a built-in air conditioning system. Hemit crabs
aggressively negotiate the exchange of property.