1. Pets'Level

Pets can level up by joining in battles with players. After every victory the pets will gain experience points.
Loyalty: Determines the pet's obedience towards the player's command. If a pet dies during battle its loyalty will decrease. If loyalty points become low the pet won't be able to join in battle or may even run away from the players. To increase the pet's loyalty, you can purchase the stone of loyalty from the NPC and use it to increase the pet's loyalty.
Stats
Level up points: After the pet levels up 1 level, it will get 4 points which can be freely assigned. Player can choose different ways to raise the pet by deciding how its stats points are added.
Health: determines the amount of health the pet has.
Intelligent: determines the amount of mana the pet will have
Strength: determines the physical attack of the pet.
Speed: determines the speed of the pet.
Resistance: For four kinds of different attributes and eight kinds of different conditions resistance, different pets have different physical resistance and magic arts resistance.

2. Pet Growth

When the pet grows up 1 level, it will have 4 stats point. Owner of the pet can add the stats to how he wants it to become.
Pet only can level up if it goes for battle. After each victory it will get experience points.

3. The use of pet during battle

Click on pet icon, select the pet to use for battle and click on the battle button. When encounters monster the selected pet will be joining in.
When in the battle mode, under the pet potion, select the way to attack, either by physical or skill attack. Or to use heal or mana potion to heal itself or the players.
Defense button. When the pet is used to defense the players it will help player to resist some damage from the monster
Dodge button. When the dodge button is used, the pet will dodge from the attacker.
Change button. For changing pets during battle.