Tetranodon

"An amphibious monster resembling a frog. Its appetite is infinite, and if it sees anything moving, it will gobble it up, dirt and all. It's theorized that the dirt it consumes builds up in its stomach and aids in digestion. If it eats something that it cannot digest, it will throw it back up. The cranial disc protecting its tender head is said to harden and become a more brilliant blue over time."

Example of:
Kappa