Oral, Rectal, Tympanic temperature
Body temperature is a complex indicator of the thermal state of the animal organism, including humans. It is one of the main and oldest biomarkers.
Animals that are able to maintain their temperature in a narrow range regardless of the temperature of the external environment are called warm-blooded, or homeothermic. Warm-blooded animals include mammals and birds. Animals deprived of this ability are called cold-blooded, or poikilothermic. Maintaining body temperature by the body is called thermoregulation.
In cold-blooded animals, body temperature differs little from the ambient temperature, and only with intensive muscular activity in some species can it significantly exceed the ambient temperature.
Oral temperature (lat. Oris - mouth) is the temperature measured in the oral cavity.
Rectal temperature (lat. Rectum - rectum) is the temperature measured in the rectum.
Tympanic temperature is the temperature in the ear canal. Measured by a special tympanic thermometer.
Via Dr. Komarovsky & wiki