it's possible to open up gashes with fingernails i think
I've experienced it.
Beta and I wake up at dawn. Good, the crazies didn't come and eat us in the night. Beta looks out of a pair of binoculars and sees its footprints. He's not too sure that it's a crazy though, points out that the prints are from a pair of boots, and the walk was probably due to an injury on the leg.
If you say so. Crazy or not, it's wise to follow him, could lead us to survivors.
Half grim half smug look.
We search the police station some more, but don't find anything but a few more empty guns (which we take) and two bullets that don't seem to fit into any gun. We put the guns in the trunk (and lock it), and follow the footprints on foot.