Fig. 1. Ambling gait cycle in an Asian elephant (Elephas maximus) (top) [traced from images in (Gambaryan, 1974)] and a fat-tailed dwarf lemur (Cheirogaleus medius) (bottom) (traced from our videotape). Note that during an ambling gait cycle, a single forelimb (FL) or hindlimb (HL) provides support for the entire body while all the other limbs are off the substrate. Mirror-image (R/L) inversions in limb pairs between the two species at corresponding phases of the cycle reflect the difference between the lateral-sequence amble of the elephant and the diagonal-sequence amble of the lemur.