1. You will need Dunkoro and Tahlkora equipped with heals, resurrect, and vengeance (the spell).
2.You will also need to bring armor with superior runes (no vigor runes) this will let you have 1 hp with high DP (for those of u that don't know what DP stands for it neans Death Penlty).
3.Uanable Dunkoro's and Tahlkora's healing spells and go get some DP.
4.Once you have a high DP put on your special armor and aggro the animal with Charm Animal.
5.Let it kill you and the monks will resurrect you (first unable vengeance). You will die instantly after resurrecting and the animal will get xp from it! This is because resurrect gives you 25% of your health and you, with your DP and runes, will have 0.25 health which is imposible so you die again and the animal gets more xp.
6.Getting the animal up to 20 will take about 30 minutes or so go find somthing else to do afk. Think of letting the heros use there heals while your gone.
7. Come back awhile later from doing what ever you were doing and vwala lvl 20 animal. Enable vengeance get resurrected unequip the superior rune armor and charm the animal!
There you have it a lvl 20 pet of your own.
Click Here if you would like to see the video.
http://www.youtube.com/watch?v=4Kp4kbzvoRw&feature=PlayList&p=E5E69EA7E2F42B6A&index=23&playnext=2&playnext_from=PL