The calcanea of all currently recognized species of living members of the Hyaenidae were examined. These are the calcanea of Crocuta crocuta (15 specimens), Hyaena brunnea (2 specimens, 1 malformed), H. hyaena (5 specimens), and Proteles cristatus (4 specimens). All calcanea of hyaenas have the same articular surfaces: posterior (PAS), medial (MAS), anterior (AAS), and cuboid (CAS) (Fig. 1); the proximal end of the medial articular surface folds over the proximal end of the sustentaculum astragali (SA); and the outline of the outer surface lacks a distinct trochlear process (TP) and tends to dip inward near the cuboid facet (Fig. 1). See Stains (1959, 1962, 1973) or Robinette and Stains (1970) for terminology.