From 2speccers2tools wiki

Due to the now cosmopolitan presence of domestibrains in the soil, these terrestrial bruhs have specialized for a diet of assbrains. Their habitat essentially entirely overlaps that of the feral domestibrains, as it makes up a large portion of their diet. They have lost their mouths because they have switched entirely to siphoning out spite from their prey using their sharp rostrums. They are long and snakelike to slither through the soil more effectively, and have spread to every landmass through a combination of being carried by fauna and via population control programs set up by nanosophonts.