I am guessing you are meaning a dog nail?
when it happened to me one night I was FRANTIC because poor harley was running around the house bleeding all over (from just one little nail!) and didnt know what to do.
So I of course, jumped online and did some quick research. the quickest thing I found was flour (like baking flour) and to put their paw in it til it stopped bleeding. of course, Harley could tell I was upset and trying to get it to stop as quick as possible so of course he didnt want to sit still
but that worked the best for me. got lots of blood and flour all over the kitchen ! but finally got it taken care of. /forums/images/%%GRAEMLIN_URL%%/smile.gif
Judi and the gang