if I bring Steamwork Terracoon Schematic + Yunium Key to that yun enterpice, can i change my pet to a steamwork terracoom or do I have t create a new one?

You can have one of your pets 'painted' or have a new one 'built'. So whichever you prefer is the way to go. c:

thank you! I want my battle pet one so I don't want new one :P

Ps, cool HA :D

- Why thank you, and I hope you enjoy your Steamwork pet!