The small animal thermometer is a precision temperature monitoring specifically designed for scientific research, suitable for rodents such as mice, rats, and guinea pigs. The probe is made of medical-grade materials, conforming to the anatomical structure of animal rectums for safety and comfort. Equipped with a high-sensitivity sensor, it rapidly acquires stable core body temperature data with minimal error margin. The device features quick response, providing real-time data display , enabling researchers to efficiently manage body temperature in pharmacological studies, disease surveillance, and other research fields.