Feinting in Combat: You can also use Bluff to mislead an opponent in melee combat (so that it can’t dodge your next attack effectively). To feint, make a Bluff check opposed by your target’s Sense Motive check, but in this case, the target may add its base attack bonus to the roll along with any other applicable modifiers. If your Bluff check result exceeds this special Sense Motive check result, your target is denied its Dexterity bonus to AC (if any) for the next melee attack you make against it. This attack must be made on or before your next turn.
Feinting in this way against a nonhumanoid is difficult because it’s harder to read a strange creature’s body language; you take a –4 penalty on your Bluff check. Against a creature of animal Intelligence (1 or 2) it’s even harder; you take a –8 penalty. Against a nonintelligent creature, it’s impossible.
Feinting in combat does not provoke an attack of opportunity.