  We report the energy and centrality dependence of dynamical kurtosis for Au +
Au collisions at $\sqrt{s_{NN}}$ = 7.7, 11.5, 19.6, 27, 39, 62.4 and 200 GeV at
RHIC. The dynamical kurtosis of net-proton is compared to that of total-proton.
The results are also compared with AMPT model calculations.
