Bloodsense Feat 7
Prerequisites master in Perception
You're extraordinarily sensitive to the presence of blood. You gain bloodsense as an imprecise sense with a range of 15 feet. This allows you to sense the presence of creatures, living or dead, that have blood (this includes most creatures that aren't immune to bleed). You're similarly able to detect the presence of fresh blood in volumes of one pint or more, so long as it's no more than 24 hours old.
Traits
Something of uncommon rarity requires special training or comes from a particular culture or part of the world. Some character choices give access to uncommon options, and the GM can choose to allow access for anyone. Less is known about uncommon creatures than common creatures. They typically can't be summoned. The DC of Recall Knowledge checks related to these creature is increased by 2.