Ok, back to the Pitt/PSU paw discussion... stick to your birds P-Mart!

As a former Mountain Lion (HS) and Panther (UP) - both of which are synomous with the cougar, puma, and/or "nittany" lion - I know my paws. After being challenged by the concept of some cats having five digits that would in fact make a print I did some more nubbing around and found this article explaining why PSU consciously decided to go the five-toed route. [Read the article] Best quote by far is noting that it could be "a possible deformity" and that "a cat with rickets might have a print like that". Go FIGHTING RICKETS!

Further, thank you Wikipedia, some say cats exhibiting extra toes were often killed off in Europe many many moons ago as they were thought to be witch's familars. FURTHER amusing... there is a strain of cat native to Ithaca New York known as Ithacats that have extra digits - perhaps the source of your confusion P-Mart.