Cat's Paw

The Cat's Paw is a Fallout, Fallout 2 and Fallout Tactics item. It can be found in one location in Fallout and is part of a side-quest in Fallout 2. In Fallout 2, if you collect enough of the magazines, one can recieve a special Cat's Paw Issue No.5 "that contains a very interesting article on energy weapons" in New Reno.

While in Fallout the item is quite mysterious and the only descriptions are "You Have No Idea" and "Upon further inspection, you still have no idea what this is.", in Fallout 2, Cat's Paw is a magazine that is infered to be either the equivilent of a Playboy or a Maxim.

Behind the scenes
Cat's Paw is actually a real-life brand of rubber heels manufactured in Canada. The image for the item in Fallout appears on the box for a pair of those heels. The developers of Fallout 2, not knowing the real origin of the image, assumed that it's a pornographic magazine.