2. Find the Wound
Once you've determined the severity of the wound, look for the source. Cuts, scrapes, and other small wounds should become visible. To make them visible, cut the hair around the wound. Shave or clip it so that you can easily see the wound without any hair obstructing your view.
Make sure that you stop any bleeding before doing this. You want to make sure that the bleeding has stopped and that it is now safe to begin trimming.