"The Trumpadon is a little fella but when he makes tracks youll feel it. A vibration will shake through your town." You can buy them from the Trading Post for around 1,500,000NP.
This Petpet won the PPL, or Petpet Protection League in Week 232. The Trumpadon is Green in its original form, but also comes in Black, Faerie, Pirate, and Purple.