B-D Digital Thermometer is safe, fast and easy to read. This digital thermometer beeps while it's working then signals when it is done, is accurate, faster than glass thermometers, has an easy-to-read digital display and is water resistant for easy cleaning. A memory feature recalls the last temperature reading, it shuts off automatically and the battery is easy to replace. Temperature is recorded rectally for animals. Consult a veterinarian for instructions on use if unsure.