I think this is what my vet is thinking of:
http://www.vin.com/VINDBPub/SearchPB...00/PR00392.htm
http://www.vetmed.wsu.edu/clientED/nasal.aspx
Quote:
If the discharge contains blood, then fungal infection or cancer are most likely to be present. An exception to this rule is that violent sneezing from any cause can cause temporary bleeding from the nose. But if bleeding is NOT caused by sneezing, then fungal infection or cancer are the most likely causes. Nasal bleeding can be part of a body-wide bleeding problem in which case bleeding or bruising are seen in locations in addition to the nose.