In Last Chaos, how many people are in your radar can decide the extra Exp your pet will gain. So what is very clear that the more people in your party training with you, the more Exp your pet gets. For example, at elder drakes, your pet will gain 6 XP a kill. If you are in a party, and you both are killing Elder Drakes, then your pet will gain 6 XP for every one you kill, and 3 for each one which your friend kills.
If you are fighting an aggro monster, you must be careful. Low level (last chaos gold) pets die very easily, as low as one hit from them some monsters. Putting on the pet right before the monster dies is a good way to avoid you is pet from dying. Also, the pet will gain the full amount of Exp as it would of normally.
You must always keeping stocked up on Thick bandages, Thick milks, freshly baked breads and the Handwritten letters, with out these; you can get into some really sticky situations. These can be bought from Merchant Polly, in Juno. When Ichi or Scra-Chi die, they lose XP. So make sure they are always full health. Here we provide you lastchaos money, just have a try with this game.