Echidnas, along with other monotremes, have a unique way of regulating their body temperature. Unlike most mammals, echidnas do not sweat or pant to cool off. Instead, they produce "snot bubbles"-mucus that they excrete from their snouts. The process works as a form of evaporative cooling, much like sweating does for other animals. The bubbles form at the end of the echidna's snout and, as they burst, the mucus evaporates. This evaporation takes heat away from the area, cooling the echidna's beak and, by extension, helping to lower its overall body temperature. Research has shown that the temperature at the end of the snout can be as much as 10°C cooler than other parts of the echidna's body.