1. Heart disease.  Brut's voles have symptoms such as loss of appetite, poor mobility, and difficulty breathing. After the disease is confirmed, the veterinarian will use cardiotonic, urine, and vasodilator methods to treat it.

2. A cold. Brinell's voles may have symptoms such as sneezing and runny nose when they have a mild cold. In severe cases, they may experience drowsiness, tearing, difficulty breathing, and decreased appetite. Radix isatidis can be used, three times a day, 2g once.