For the milking of animals, in particular cows, in a milking installation comprising a plurality of milking places, a method and a device are proposed wherein the milk yields extracted during a milking session at some milking places or the characteristics corresponding to the milk yields are determined and evaluated and in particular compared with prognoses as to milk yield or characteristics. These measures allow on the one hand that sufficiently accurate data are provided for herd management while on the other hand the investment cost for a milking installation are reduced.