Fig. 4. Typical example of temporal changes in chamber temperature (A), rectal temperature (B) and rates of gas exchange (_O2 and _CO2; C) of an armadillo during cold-exposure. Time zero indicates the start of cold-exposure. In this example, it took 35 min for peak rectal temperature (36.0°C) to occur and 123 min for peak _CO2 (93.6 ml min^-1) and _O2 (110.6 ml min^-1) to occur.