NO NO NO NO NO NO NO NO NO NO!!!!!!!!!!!
NO NO NO NO NO NO NO NO NO NO!!!!!!!!!!!
The mouths are deep underground, the rock part is an anchor so they don't sink too far, that way they can get to the level of soil with the pepperiest pebbles and the chewiest chubers. . .
Um, tubers.
I'll show you this diagram of the anatomy of an ARK rock:
O - rock
|
| - Tail
|
( ) - Lil' pot belly
'o' - derpy mud gobbler
See?