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Fig. 1. Slow (A) and fast (B) locomotion in Kassina. The numbers represent
time (s) for both columns of video images. The vertical columns of images show
a typical slower speed (0.12 m s-1) trial and a typical faster
speed (0.21 m s-1) trial of an individual. The widths of all frames
are identical. Each column shows one complete stride, beginning and ending
with the right forelimb contacting the ground. A mirror placed at an angle
shows a simultaneous dorsal view to allow visibility of all four limbs
simultaneously. The asterisk (*) and plus (+) symbols represent
corresponding stages of the slow and fast strides. Supplementary movies are
available on-line.