Fig. 8. Mean values of the two-dimensional angle of pelvic rotation (A), and the three-dimensional angles of knee angle at footfall (B) and ankle angle at footfall (C). Circles and triangles represent C. calyptratus on the treadmill and perch, respectively. Squares represent D. dorsalis on the treadmill. Table 3 summarizes the statistical comparisons among species, inclines and surfaces.