What’s the difference between Axillary Temperature Sensors and Rectal Thermometers in Caines? Only 1 degree. In an outside study of active and awake dogs mounted axillary temperatures were not clinically different from a digital rectal thermometer. If axillary temperature sensors are placed properly on a dog, then the temperature of these thermometers will read correctly. These thermometers offer a breakthrough in the industry to put less stress on the dog through rectal temperatures. The MeasureON! harness is a new and innovative way for vets to receive an accurate temperature reading without even being in the clinic, saving the veterinarian and the veterinary technicians valuable time and money. This, along with an ECG graph, heart rate, and activity monitor, provides an accurate description of the patient’s health and paints the picture of the overall health of the dog. For more information, read below!