Garbage Worm

Garbage Worms are creatures made up of a single, flexible black tendril ending in a bulb very similar to an eye-stalk. They are generally found sprouting from dirty water or garbage, especially from the Garbage Wastes region, thyre neutral by nature and won't attack until provoked, this includes the slugcat and lizards (and maybe other monsters, needs testing).

Slugcat Interaction
Generally passive and non-hostile, these long worms bend their flexible bodies to observe Slugcat, until he approaches too close, in which the Garbage Worm will retract back where it had sprouted from. Before retracting however, these creatures will steal any weapon from Slugcat's paw as he passes by, including objects such as spears. stone, brick and bomb won't get stolen.

When a garbage worm changes shades from white and black to a reddish tinge that means they have become hostile and will attempt to drown Slugcat in the dirty water they spring from.

If no water is available, they'll just fling you around

Developer's Note
The Developers have said that while Garbage Worms generally leave your Slugcat alone, "always be cautious because hunger has no law."