My family has a German shepherd, only four months old. The puppy is thin, doesn't like to eat, is in poor spirits and always sleeps. In that motionless cross-examination, he still always sends out "hmm." ... If the dog has the following symptoms, the owner should be careful: 1 Poor appetite-the body is uncomfortable and the appetite naturally becomes worse. The spiritual difference is that they are not active, lazy and not so active anymore. 3. Fever-pathogen invasion, heatstroke. 4. Vomiting-gastropathy, enteritis, foreign body in digestive tract, constipation and poisoning. As long as vomiting center is stimulated or his abdominal organs are sick, he will vomit. Dogs land on all fours, and their internal organs are arranged parallel to the ground, which makes them vomit more easily than humans. If they only vomit occasionally and their spirits, appetite and defecation are normal, there is no need to worry. Nervous small dogs are more likely to spit sour water before breakfast in the morning because of hunger, which will easily cause gastric and duodenal ulcers in the long run. 5. Diarrhea-after a sudden change of food, or the invasion of parasites, bacteria and viruses, or the dog is allergic to food, allergic to certain pesticides and poisoned. 6. Dehydration-When you lose moisture due to vomiting and diarrhea, your skin will easily lose its elasticity. This is different from when the dog is thin and the skin is close to the bones and muscles. 7. There are differences in fur, loss of luster, hair loss, dandruff, swelling and rupture of epidermis, severe itching, and lumps or patches under the skin. 8. Crying-pick up the dog, bark when touching a certain part, and moan constantly, or the dog has no appetite and keeps crying. 9. Abdominal pain-mainly flatulence, intussusception, gastric volvulus, foreign body obstruction, pain in the head, and dare not go down. 10. Acute breathing, wheezing and coughing-upper respiratory tract stenosis, foreign body, pneumonia, pulmonary edema, pleural effusion, heart disease, etc. 1 1. Pale mucosal skin-dehydration, massive blood loss or chronic long-term blood loss. 12. Mucosa and skin turn yellow and gray-anemia, immune system diseases, hepatobiliary diseases and uremia. 13. edema of limbs, subcutaneous and abdominal hydrops-malnutrition of puppies, liver, kidney and heart diseases. 14. Urine becomes discolored and thickened. If the amount is small, it may be insufficient water. White turbidity, stones or inflammation. Dark brown, even bloody, may be urinary calculi or inflammation. 15. Abnormal vaginal discharge-normal bitches have been in estrus for about two weeks, but still have cloudy white or dark brown discharge for more than two weeks, and the uterus and bladder are sick. 16. Sudden improvement of appetite-endocrine differences, such as hyperthyroidism. 17. polyuria and frequent thirst-increased urine volume and frequency, persistent thirst, pyometra or endocrine disorders. 18. Weird behavior-diseases of bones, muscles and joints, or abnormal nervous system.