The mugger crocodile has an optimal body temperature of 30 to 35 °C (86 to 95 °F). It will die of freezing or hyperthermia when exposed to temperatures below 5 °C (41 °F) or above 38 °C (100 °F). It digs burrows to get away from extreme temperatures. Burrows are between 0.6 and 6 m (2.0 and 19.7 ft) deep. Temperatures inside the burrows keep constant.