Unlike the males, the female stellar river otters are much more docile and spend most of their days working together hunting and taking care of the young. They only rely on the male to construct and maintain the dens and to defend the territory. The females of this species have a very different social structure than the males of this species. Females of neighboring territories are capable of coexisting and leaving one another alone. This allows there to be many rafts of females throughout a single river system and makes it easy for young females to easily find a new raft if they so desire.