It may be caused by tumors, constipation, or foreign bodies. If the dog has a tumor, it needs to be taken to a pet hospital for surgical treatment. It is also possible that the dog eats too much, which leads to the accumulation of food in the stomach, so there will be hard lumps. The owner can take the dog to exercise moderately and give the dog small meals frequently. If the dog swallows a foreign object and enters the abdomen, you can take the dog to take an X-ray to confirm the size and location of the foreign object.

What to do if the dog has a tumor:

1. If the dog has a tumor, we first observe whether the dog’s mental state is normal and whether it affects the dog’s health. If life is not affected, we can wait and see.

2. If it is a general benign tumor or a subcutaneous lipoma or an epithelial cell tumor, you can first choose surgical treatment.

3. If it is a malignant tumor, it is recommended to send it to a laboratory for cell and blood tests. At this time, chemotherapy can be selected.