Pebble Pig

The pebble pig (sus barbascrofa) is the most populous creature on the surface of Moon. It is violent and unpredictable, attacking anything it finds walking on the plains. Pebble pigs feed off of rotting alwan trees if there is no other food to be had, but being picky they generally wait for wayward travelers and migrating interplanetary birds to fall from the sky. The pebble pig can go up to a year without eating anything.