Breath weapon action type

[Zen79]

I can't find in the rules which type of action a breath weapon is: full-round, standard, ... ?

[Tanis]

Standard action. Core p.183 has a table that describes which actions are what. It says supernatural abilities are standard actions which do not provoke attacks of opportunity.

p.298 of the Beastiary describes breath weapons as a supernatural ability.

Therefore, breath weapons are standard actions.

[0gre]

When in doubt it's probably a standard action.

Actions that are not standards actions almost always say explicitly what type of action they are.

[Zen79]

Thank you!