Fig. 5. Mass-specific mechanical power vs velocity in Hemidactylus garnotii climbing vertically and running on the level. Solid line (circles) is the linear least-squares regression (Power=0.9+9.9v, where v is velocity in m s^-1; r²=0.83) for climbing. The broken line represents the product of gravity and velocity, the minimum mechanical power production possible. The solid line (triangles) represents the least-squares linear regression (Power=0.3+1.9v; r²=0.48) of geckos running on level ground (Chen et al., 2006).