The phonon dispersion properties of Europium Chalcogenides have been analysed by a lattice dynamical model which includes the effect of three-body interaction (TBI) in the framework of second neighbour rigid shell model (SNTRSM) and second neighbor rigid ion model (SNTRIM). The significance of these two approaches thus obtained, have been applied to study the phonon dispersion curves (PDCs) of Europium Oxide (EuO) along the principal symmetry directions. It is found from our prediction that SNTRSM explains well the phonon anomalies in the experimental PDCs of EuO as compared to SNTRIM and other models.