Figure 2.

(a) Decrease in sprint speed by track. Percentages above each represent the per cent of maximum sprint speed compared to performance on the 37° wood track, on which lizards sprinted the fastest. (b) Mean number of stops, slips, and slides on each track, with whiskers showing ± s.e. of each (there were no slips or slides on wood tracks). C, concrete; M, metal; W, wood.