2. Large, fluid-filled sacs under the dog's skin. These cysts can grow to be quite large, and they may cause the dog's skin to bulge or sag. They are often found on the dog's back, neck, and legs.
3. Infected cysts, which may appear red, swollen, and painful. Infected cysts may also discharge脓液or blood.
4. Cysts that have ruptured, which may leave a raw, open wound. Ruptured cysts can be painful and may require veterinary treatment.
If you think your dog may have a cyst, it is important to take them to the veterinarian for diagnosis and treatment. The veterinarian may recommend surgery to remove the cyst, especially if it is infected, ruptured, or causing the dog pain or discomfort.