Pet Skills
In some versions, pets have different skills. The ways to obtain these skills and their effects vary from version to version. In KoreaMS, certain pets come with these abilities built in, like the Yeti. In TaiwanMS, the skills are purchased from the cash shop, and are permanently installed on the pet. These skills can only be removed with an AP reset scroll that is also bought from the cash shop. A single pet can only have 3 skills at one time. The skills are as follows:
Automatic Pick-up Skill:
A skill that enables pets to pick up items and mesos within the area without the character having to move. Available to pets with Mesos pick-up, item pick-up skills.
Automatic Pick-up Leftover Item and Meso Skill effects
Adds the skill that enables pets to pick up mesos and items that have been dropped for more than 30 seconds, thus rendering it as leftovers. Available to pets that have Meso pick-up skills as well as item pick-up skills.
HP Charge Skill effects
Adds to automatic potion-feeding skill to the pet. Set the potions for your pet to use in the Equipment menu. Available to all pets that do not have this option.
MP Recharge Skill:
Adds to automatic mana potion-feeding skill to the pet. Set the potions for your pet to use in the Equipment menu. Available to all pets that do not have this option.
Item Pick-up Skill:
Adds the item pick-up skill to a pet. Available to pets that can only pick up Mesos.
Expand Range Skill:
Use this scroll to expand the pet’s moving range by 3 times. Only available to pets that have automatic pick-up skills, cannot be used on top of each other.
Unlootable Item Skill:
Adds the skill to choose which items to loot to a pet. Set the items which you do not want the pet to loot. Available to all pets.
http://www.ngpriest.com/2008/06/12/multi-pet-effects/
http://www.ngpriest.com/2008/06/05/multi-pet-system/
http://www.ngpriest.com/2008/06/03/patch-057/