Fig. 2. Relative rehydration rate of dehydrated H. suspectum following introduction of 30 ml water orally (ORAL) or into the bladder (BLDR). Absolute changes in plasma osmolality is plotted to clarify relative ORAL to BLDR rehydration rates because initial osmolality differed slightly between groups. Values shown are means ± 1 s.e.m. of six lizards per treatment. Different letters denote significantly different values over time and between groups.