Pets

A worn pet adds stats. Pets have no levels: they have Growth, from 0% up to 200%, which rises as you hunt (some pets, such as the starting pet, stop at 100%).

Which pets

The basic pets , , and each raise one stat. They drop from monsters and come from the Pet Lucky Box.

The best pet is the Iron Condor (Magpie), which raises Attack, Defense and HP.

Wyvern, Sky Mirror and Unbound Dragon from the Item Mall can be equipped at M33.

Growth

Growth goes from 0% to 200% (see it on the pet card); some pets, such as the starting pet, stop at 100%. Most of the bonus comes on the way to 100%; after that only the Attack bonus still rises a little.

Wear the pet and kill monsters that give you EXP: they also give your pet EXP. EXP Boost [Pet] () doubles pet EXP for 3 hours, adds 1% Growth at once, and Premium Service doubles pet EXP.

Activity no longer goes down over time (since the 206 update; mount activity too). from the Herbalist still fills it to the max: a pet at 0 needs one feeding, then it stays. At 0 the pet gets no EXP and its Attack bonus stops.