Darkvision

Infravision allows creatures to discern shapes by detecting infrared radiation. Like darkvision, infravision allows a creature to see in complete darkness, though not darkness that is magical in origin. Creatures able to use infravision are often able to shift between the normal spectrum of light and that of infravision at will. While making use of the infrared spectrum, their eyes glow red.

Creatures known to have infravision include:
 * Halflings
 * Dwarves
 * Drow
 * Duergar