http://www2.elliebelly.net/modules/Ques ... hlove.html

when we finish this Q...
are we still keeping the trained pet, ex : Trained buffalo...??

if yes..
the pet can heal (heal and buff) or not???

The quest has nothing to do with your pet;
If you buy cristal/golden spyce and you feed mobs till x4 hp it has a chance of 50% that on x4 hp mob will turn into a trained pet and he will recharge/buff/heal you. If you have the quest, when you make a trained pet is a chance to get a quest item, jewel of innocence and when you return to tanatun you get 68k adena. The pet won't disappear if you finish the quest because has nothing to do with it. There are 2 different things; You can train mobs w/o taking any quest. You need to buy food only, from food seller.