Joppa

"Deep down there, roam the Joppa, big game."- Gregor.

The Joppa was an large worm-like creature that lived underground the planet Seelos. It had sharp teeth and could grab their prey from the surface above using is long, frog like tongue. The retired clone troopers CT-7567, CC-5576-39, and CC-3636 hunted these creatures for food.

Fact:

When the Joppa known as Big Bongo grabs Zeb from the surface, it makes the same sound the sarlacc in Return of the Jedi makes.