In this video, we talk about our research on slavemaking ants and their hosts (slaves). The slavemakers are of one species (P. americanus) and the hosts (slaves) of another species (T. longispinosus). Host ants can be captured by the slavemaker ants, and these captured ants (slaves) normally work for the slavemaker queen. But recently, it was found that they sometimes kill slavemakers. It is unclear why they do this, because they probably cannot reproduce.