TABLE 1.

Sample size (i.e., number of experiments during which valid data were collected) for climbing metabolic rate (MR), cost of transport (COT), and speed ranges utilized during climbing, for each individual and species (body mass in kilograms)

Species	Climbing MR (N)	COTclimb (N)	Speedclimb max-min (m s−1)	Horizontal MR (N)	COThoriz (N)	Speedhoriz max-min (m s−1)
L. tardigradus	16	12	0.114–0.041	8	8	0.092–0.045
A (0.157)	7	5	0.081–0.041	2	6	0.076–0.060
B (0.172)	4	2	0.072–0.071	NA	NA	NA
C (0.171)	5	5	0.114–0.068	6	2	0.092–0.045
C. medius	18	16	0.112–0.042	14	13	0.114–0.043
A (0.241)	6	4	0.076–0.042	5	5	0.072–0.047
B (0.276)	4	4	0.111–0.076	4	4	0.071–0.043
C (0.260)	8	8	0.112–0.049	5	4	0.114–0.053
N. pygmaeus	9	9	0.079–0.047	8	8	0.076–0.049
A (0.447)	5	5	0.079–0.053	4	4	0.076–0.060
B (0.492)	4	4	0.067–0.047	4	4	0.073–0.049
S. boliviensis	8	8	0.213–0.152	4	4	0.334–0.231
A (0.744)	4	4	0.188–0.152	NA	NA	NA
B (0.821)	4	4	0.213–0.158	4	4	0.334–0.231
E. mongoz	9	9	0.157–0.110	4	4	0.160–0.140
A (1.340)	2	2	0.151–0.135	4	4	0.160–0.140
B (1.346)	5	5	0.157–0.110	NA	NA	NA
C (1.460)	2	2	0.123–0.117	NA	NA	NA