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Fig. 6. Mean values of (A) relative stride length (open symbols) and step length (filled symbols), (B) relative minimum (filled symbols) and maximum (open symbols) hip height (Yhip), (C) relative longitudinal position of the ankle (Xankle) and (D) relative lateral position of the ankle (Zankle). Circles and triangles represent C. calyptratus on the treadmill and perch, respectively. Squares represent D. dorsalis on the treadmill. Tables 1, 2 and 4 summarize the results of the statistical comparisons among species, inclines and surfaces.