1. Vaccination did not absorb: Recently, a drug or vaccine was injected into the long bag, which may be caused by the cat's intolerance to the drug and long-term non-absorption. The owner can apply hot compress and massage to this part. If the soft bag does not shrink or disappear after a few days, you need to go to the hospital as soon as possible.
2. Caused by chronic vascular diseases and aging: Vascular diseases and aging can cause the shoulders of cats to bulge. If the swelling becomes bigger or there are other abnormal conditions, it should be sent to the hospital for examination and treatment immediately.
The above information is for reference only. It is recommended to go to a pet hospital for treatment.