Den of Thieves. Valkruungs are social creatures and live in groups of ten to twenty. The job of child-rearing is shared by all members of the group equally, and young valkruungs spend the first parts of their lives carried around on various adults' backs, where the adults' tendrils keep them safe. Valkruungs are more intelligent than they appear and have a rudimentary grasp of language, typically insults that have been hurled their way.