Perhaps you did not entirely die when you were Embraced, or perhaps the vampiric blood in your system altered your physiology less than others. You register as a mortal on all attempts to determine your creature type. Further, your aura is unnaturally bright for a vampire, and animals cannot sense your Beast (they act as though you are a mortal). If your Morality drops to 3 (temporarily or permanently), this merit ceases to function until your Morality is once more raised above 3. A character on a Path of Enlightenment cannot possess this merit.