An arrangement for determining a body condition score of an animal comprises a three-dimensional camera system directed towards the animal and provided for recording at least one three-dimensional image of the animal; and an image processing device connected to the three-dimensional camera system and provided for forming a three-dimensional surface representation of a portion of the animal from the three- dimensional image recorded by the three-dimensional camera system; for statistically analyzing the surface of the three-dimensional surface representation; and for determining the body condition score of the animal based on the statistically analyzed surface of the three-dimensional surface representation.