The MPI for Neurobiology of Behavior – caesar (MPINB) in Bonn focuses on basic research in neuroethology. The international team of researchers at the institute study how the collective activity of vast numbers of neurons gives rise to the plethora of animal behaviors. The interdisciplinary research spans from imaging neural circuits at the nanoscale to analyzing neural activity in a freely moving and naturally behaving animal. The MPINB works closely with the University of Bonn and other local research institutes to train the next generation of young scientists in a joint graduate school.