A cat's paw is a straight steel rod with a curved claw at one end. A cat's paw, also called
a nail claw or carpenter's pincer, is used to pull nails that have been
driven flush with the surface of the wood or slightly below it. It is used
to pull nails to just above the surface of the wood so they can be pulled
completely out with the claw of a claw
hammer or a wrecking bar.