Harry Merchants bird

Three drooling cats with mouth sores, difficulty eating and periods of lethargy. What's wrong? - mouth sores liver

5 cats allowed at the age of 11 years and 7 months. Two ulcers in the mouth) (brother and sister are drooling three and difficulty eating. One was in liver failure 7 months ago and had lost up to 4 pounds. and has been published. I plan on vocational education and training of tomorrow, but I wanted an idea of what could be wrong.