Because the disease is a chronic disease, the sick dog will not show symptoms for a long time, and then there will be loss of appetite, fatigue, weakness, progressive emaciation, listlessness and so on. Pulmonary tuberculosis is characterized by cough (dry cough), which later turns into wet cough with mucus and pus. Digestive tract tuberculosis is characterized by digestive tract dysfunction, intractable diarrhea, emaciation, weakness, anemia, and often accompanied by ascites. Skin tuberculosis mostly occurs in the neck, with uneven edges and granulation tissue at the bottom of the ulcer.

Dog tuberculosis is often a chronic infection, characterized by low fever, emaciation, cough, anemia, vomiting and diarrhea. Tuberculosis is often manifested as symptoms of bronchopneumonia, accompanied by dry cough, shortness of breath, auscultation of lung sounds, weight loss and loss of appetite. Gastrointestinal tuberculosis, with gastrointestinal symptoms, accompanied by vomiting, indigestion, diarrhea, malnutrition, anemia, abdominal pressure can touch abdominal organs, there are lumps of different sizes. Bone tuberculosis. It can show dyskinesia, claudication and easy fracture.

Tuberculosis in dogs is a chronic wasting disease. It is mainly infected by Mycobacterium hominis and Mycobacterium bovis, and rarely by Mycobacterium avium or mycobacterium fortuitum infection. The incidence of indoor dogs is higher than that of outdoor dogs. The incubation period of the disease is different, which is related to the dog's age, rest quality, nutrition and management. It is easy to be tired and weak at the beginning of the disease, and then progressive emaciation and dull coat appear. Most dogs have a low fever in the afternoon. Chest type is the most common, namely tuberculosis, chronic dry cough, hemoptysis and dyspnea. The auscultation of lesions includes bronchoalveolar breath sound and wet double tone. When there is a lung cavity, you can hear the sound of splashing water. The gas exhaled by the sick dog is very unpleasant. When tuberculosis spreads to pericardium and pleura, it will cause dyspnea, cyanosis and right heart failure. When suffering from abdominal type, vomiting and diarrhea, mesenteric lymph node enlargement, skin tuberculosis mostly occurs in the throat and neck, and the edge of the lesion is irregular granulation tissue ulcer.