||A creature has the ability to react to danger before her senses would normally allow her to do so. She cannot be caught flat-footed, nor does she lose her Dex bonus to AC if the attacker is invisible. She still loses her Dexterity bonus to Armor Class if immobilized. A creature with this ability can still lose her Dexterity bonus to Armor Class if an opponent successfully uses the feint action against her.
If a creature already has uncanny dodge from a different class, she automatically gains improved uncanny dodge instead.