The present invention relates to an apparatus and a method for recognizing and determining the position of a part of an animal. The apparatus comprises a source of structured light for illuminating a region expected to contain at least one part in such a way that an object illuminated by the light simultaneously or discrete in time is partitioned into at least two illuminated areas, where each two illuminated areas are separated by a not illuminated area, an image capture device arranged to capture at least one image formed by the light and provide an image signal, the apparatus further comprising image signal processing device to respond to the captured image signal and a control device to determine if the illuminated object is the part by comparing the image of the illuminated object to reference criteria defining different objects, and if the illuminated object is established to be the part of the animal, the position thereof is established, an animal related device and the device to guide the animal related device towards to the position of the part.