http://rathena.org/wiki/Custom_Pets
MobID,Name,JName,ItemID,EggID,AcceID,FoodID,Fullness,HungryDelay,R_Hungry,,R_Full,Intimate,Die,Capture,Speed,S_Performance,talk_convert_class, attack_rate,defence_attack_rate,change_target_rate, pet_script
1002,PORING,Poring,619,9001,10013,531,80,20,50,100,250,20,2000,400,1,0,350,400,800,{ petloot 10; }
attack_rate: Chance the pet will attack. Same format as Capture rate.
Capture: The rate of capture. 1% = 100 and 100% = 10000. Basically, choose your percentage and add two zeroes to the end.