24 h mean of body temperature plotted against 24 h mean of air temperature (A), and 24 h amplitude of body temperature plotted against 24 h range of air temperature (B), for one springbok (female 1, 353 days data). 24 h mean of body temperature plotted against 24 h mean of air temperature (A), and 24 h amplitude of body temperature plotted against 24 h range of air temperature (B), for one springbok (female 1, 353 days data). Andrea Fuller et al. J Exp Biol 2005;208:2855-2864 © The Company of Biologists Limited 2005