1. Gall bladder mucocoele. Uncommon disease but there was a case. Diagnosed by ultrasound of gall bladder and blood tests. Treatment would be surgical but very high risk. The 10-year-old dog died the next day.
Vomiting was one sign.
2. Cardiac tamponade. Uncommon disease. Could be diagnosed as "fat" in the double chin as in one case in the Labrador Retriever, according to the owner who consulted Vet 1.
3. Enlarged spleens in a few dogs over the years. Reasons unknown in many cases. No parasites. Spleen removed. Some survived. Some did not.