Maybe it was vonWillebrands-my Corgi was only 8. Has anyone else had experience with a sudden onset of loss of appetite, severe anemia, enlarged spleen? Her spleen was destroying her RBCs faster than her marrow could make them. First notable symptom besides lethargy and decrease appetite was a soft bright orange stool and dark urine. This was how her destroyed rbc's were eliminated.
If anyone sees this-RUN to your vet quickly! She died in less than a week.