a tool for surveillance of animal wellfare in dairy cattle Animal welfare is a multidimensional concept, which is based on a good animal health and the species-specific behavior. Both are largely determined by management. These include the daily animal control and surveillance routinely available process data. Therefore, the research project aims to develop a monitoring tool that allows the farmer an effective control on the herd and individual level. The monitoring of animal welfare of individual animals or groups of animals is paramount based on the observed behavior.