They are scavenger family of organisms, picking up whatever they find aside from Volatile Dweevils, even corpses of their brethren. They like to camouflage themselves as these items they pickup due to being weak
They are enemies of Pikmin, Bulbmin and Bulborbs since they are all related due to Bulbmin and Pikmin attacked the Dweevils.
It is known that dead Bulborbs have been lying around because of attacking Dweevils.
It is a fact that they are enemies of the Puffstool.