When the Werner Reimers Foundation organized a colloquium on Human Ethology in 1977, it was about Claims and Limits of a New Discipline as a bridge between biology and the social sciences and humanities. As a lost discipline, however, the interdisciplinary approach to ethology only takes shape in a dispersed dispositif. This is the framing argument, which derives from the nucleus of ethology, namely that the starting point of all knowledge is the body in its possibilities of movement in time and space to affect and be affected. In their essays (English or German), the contributors to this collection have worked through the heterogeneity of ethological thought – from Spinoza to Jakob von Uexküll, Gregory Bateson, Gilles Deleuze and Félix G...