Fever is a natural response of the bovine immune system to infection, inflammation, or other pathogenic challenges. When a cow’s body temperature rises above the normal range of approximately 101.5°F (38.6°C), it indicates an ongoing physiological process meant to combat disease. Common causes of fever in cattle include infectious diseases, such as bovine respiratory disease (BRD), leptospirosis, and Mastitis. Non-infectious conditions such as stress, heat exhaustion, or even rumen acidosis can also lead to elevated temperatures.
