Bovine Viral Diarrhea (BVD) is a contagious viral disease affecting cattle, caused by the Bovine Viral Diarrhea Virus. It can lead to symptoms such as diarrhea, fever, and respiratory issues. The disease can be acute or chronic, and infected animals may also experience reproductive problems, including abortions and birth defects. The virus spreads through direct contact with infected animals or contaminated environments. Vaccination is an effective preventive measure, helping to reduce the incidence of BVD in herds. Early detection and management are crucial to minimize the impact of this disease on cattle health and productivity.