any pet can do for goddess training..

just make sure that damager speed is lower than pet's speed..

I ever use chicken(fire type) for bursting,and cow..
even use pink earthworm..

but,for best result,u can use pet that has quite high speed so it's easy to set up damager's speed,and quite strong pet so it can give more damage...

Feed Me! Click me pwease....

~Vayrie~
~Indo-Army~
~Wind-Warrior~
~Libra~

Spoiler:

What Ragnarok Online Character Are You?