Derhii form relatively small groupings known as troops, which usually consist of a single adult male, several adult females, and their offspring. Occasionally, multiple males or females band together in single-gender troops with no young, but such groupings are usually formed for a specific purpose, such as hunting, raiding, or war, and break up when they have fulfilled that purpose. Multiple troops of derhii form large primitive tribes, usually under the rule of a single powerful chieftain.