There may be many reasons why a 5-month-old kitten has a big belly. Here are some common possibilities: 1. Excessive food intake: If the kitten eats too much food, especially one that is prone to bloating Food may cause the stomach to become enlarged. 2. Indigestion: If the kitten eats too much or is full, the intestines and stomach cannot digest so much food, which may cause symptoms such as gas, retching, and abdominal distension. At this time, the kitten's belly will become very large.

3. Constipation: If the kitten does not defecate for several days, or only A little bit of urination may be due to constipation. In this case, you can observe the kitten's defecation. If there is indeed a problem, you can try to change the kitten's diet, increase the amount of water it drinks, or use some laxative drugs.

4. Parasitic infection: If the kitten is infected with parasites, such as roundworms, tapeworms, etc., the parasites will multiply and grow in the intestines, which may also cause the belly to become enlarged and sometimes be seen in the feces. Worms or diarrhea. 5. Abdominal swelling: If the kitten’s abdomen is swollen and feels as hard as a ball, it may be caused by certain diseases, such as ascites, tumors, etc.