Pets earn EXP depending your character's training against different monsters. Training PETS to earn their EXP will take a lot of effort and patience; but it is a rewarding experience. All Pets by default; start at level 1 with an available one Pet skill slot. This PET Skill slot will allow you to train your PETS to learn skills from the Core Alchemists.
When you interact with a Core Alchemist, you will be able to see the PET Training option under the UPGRADE Category.
Once you select the Pet Training option, you will see the PET TRAINING window. You have to unequip your PET from your inventory and place it in the Training Window. To train the PET, the Alchemist will require 1 piece of Force Core Highest. The success rate of upgrading a PET is at 100% but the slot options that you'll get are randomized. Just press the Train PET Button to start the training process of your pet. You can earn different types of Pet Skill options randomly.
Below is a table containing the possible Pet Skill SLOT Options that you can acquire.
Once you successfuly trained your pet, you will be able to see which randomized Pet Skill Option you acquired during the training. In the case of the Screenshot below, the PET Skill option acquired was a MAX CRIT RATE +1%.
Depending on the Level of your pet, you can acquire more skill options. For every 1 Level, you earn 1 additional Skills Slot.
Example: The pet shown in the Screenshot below is a Level 9 Pet with 9 available skill option slots.
There you go! That's a short guide on how to train your Pet's Skills. Watch out for the next guide containing instructions on how to Untrain your Pet's Skills, Rename your Pet, and use the PET Sealing feature.
Happy E-Gaming! ^_^