Earth Crawlers

are massive creatures that can be seen in various locations. Pre-matured ones are called Sand Crawlers.

Appearance
Sand crawlers are chubby-fishlike creatures with teeth and jaws, and spotted backs. They are around the size of Hawk. As they mature, they are more crocodilian-like and can span hundreds of feet in length.

Abilities
They can dig underground and catch their prey from below, eating anything they could fit in their mouths. Matured ones are able to eat big things like giants, buildings, and Tyrant Dragons. Their bodies including their inners are covered with mucus as physical attacks just slide off of them.