  A perturbation method to analytically describe the dynamics of a classical
spinning particle, based on the Mathisson-Papapetrou-Dixon (MPD) equations of
motion, is presented. By a power series expansion with respect to the
particle's spin magnitude, it is shown how to obtain in general form an
analytic representation of the particle's kinematic and dynamical degrees of
freedom that is formally applicable to infinite order in the expansion. Within
this formalism, it is possible to identify a classical analogue of radiative
corrections to the particle's mass and spin due to spin-gravity interaction.
The robustness of this approach is demonstrated by showing how to explicitly
compute the first-order momentum and spin tensor components for arbitrary
particle motion in a general space-time background. Potentially interesting
applications based on this perturbation approach are outlined.
