We have all seen dogs and even cats pant when they are stressed from high temperatures, and breathing rapidly (panting) helps the body rid itself of excess heat. If we think back to the cold days of winter, we know that when we breathe out into the cold we can see our breath in small clouds because it is hot in the frigid air. Many species of animals get rid of excess body heat by panting. Perhaps you have even noticed birds in the summer walking around or perching with their beaks open — they are panting when they do this. The air sacs in their high-functioning respiratory systems help the lungs, through panting, to rid their bodies of excess heat in much the same way as in Evaporative cooling. Keeping your animals hydrated and using evaporative technology will help keep your animals cool and free from panting.