Used by veterinarians, this is the noninvasive thermometer that takes a dog's temperature without touching the pet. Unlike probe thermometers that are difficult to insert and uncomfortable, this advanced model measures a dog's radiant heat from 1" to 2" away from its perianal region using a safe, highly sensitive infrared sensor. The thermometer is pre-calibrated for canines to ensure optimal accuracy, it displays the temperature in one second on an LCD (and speaks the reading, if desired), and stores up to 32 readings for tracking the progress of a dog's fever. About the size of a television remote, the thermometer is easy to maneuver and provides measurements in Fahrenheit or Celsius. Includes two AAA batteries. 6" L x 1 3/4" W x 1 3/4" D. (6 oz.)