Creatures Creature Families Creature Abilities
Creature Adjustments Creature Templates

Creature Abilities

Source Alien Core pg. 208

The following creature abilities are listed here because they are shared by many creatures or are highly complex. The statistics for individual creatures might alter the traits, the number of actions, or other rules of these abilities. Anything noted in a specific creature's stat block overrides the general rules for the ability below. In these abilities, “monster” is used for the creature that has the ability, to differentiate it from any other creatures the ability might affect.

Improved Grab, Improved Knockdown, or Improved Push [free-action]

Source Alien Core pg. 209
The monster can use Grab, Knockdown, or Push (as appropriate) as a free action triggered by a hit with its initial attack. A monster with Improved Grab still needs to spend an action to extend the duration for creatures it already has grabbed.