Basilisk

The Basilisk is a creature mentioned in the Llamas with Hats series. A Basilisk lives in Carl's Gore Pit and feeds on Chipotle.

Llamas with Hats 10
Whilst trapped in Carl's Gore Pit, the Paul Mask says that something else is in there with them, but Carl tells him that it's his basilisk and that they don't need to worry because it only eats Chipotle.

Trivia

 * The Basilisk is probably a reference to the creature of the same name in Harry Potter.