The research reported in this paper investigates variability in a motif type. The material used consisted of engraved macropod tracks from a Panaramitee style Aboriginal engraving site in western New South Wales. The analysis consisted of two experiments one on zoological specimens and the other on an archaeological assemblage. The zoological experiment investigated macropodid taxonomy on the basis of pes morphology, while the archaeological experiment searched for patterning within the engraved macropod track assemblage. Principal Component Analysis and Cluster Analysis were the statistical methods employed. A major proportion of the variability observed within the track engravings was explained in terms of macropod species differentiation.