Exclusive to: Don't Starve Together.

“That rock's alive!”

“Don't worry, I won't kick you.”

“Hello, itty bitty pincher!”

“Had I such a shell, I would never emerge.”

“IT'S LIKE A ROCK, BUT ALIVE AND WORSE”

“I should like to study its shell more closely.”

“I don't see any reason to bother the little fella.”

“You can't hide from me.”

“Thöu cannöt hide fröm me!”

“Don't be afraid!”

“Ground Pinchy!”

“He ain't a threat to no one.”

“What a funny creature!”

“Aww, it so cute!”
–Wurt
The Pebble Crab is a passive Mob exclusive to The Gorge event in Don't Starve Together.
Several Pebble Crabs can be found wandering around the town rubble area where Billy and the Mealing Stone can be found. They burrow into the ground when the players get near them, but can be caught with a Crab Trap, bought from Billy with a Red Mark. Crab Traps can be baited using Meat Scraps or Salmon to be more effective.
After being caught, Pebble Crabs can be murdered for 1 Crab Meat, which can be used in a variety of crab Cooking Recipe.

Pebble Crab goes into the ground