If you suspect your Siberian cat may have developed fatty liver disease talk to your vet. Fatty liver generally occurs in cats when large amounts of fat are deposited into the liver. Symptoms may include prolonged anorexia, rapid weight loss, vomiting, diarrhea, constipation, muscle wasting, depression, downward flexion of the head and neck, yellowing of the eyes, drooling, and possible collapse in later stages. Once a diagnosis has been made, your cat will need immediate treatment from your veterinarian. If it is severe, your cat may need to be hospitalized for fluid therapy as well as vitamin supplements that may include B-complex vitamins, cobalamin and thiamine. Additional treatment is dietary as your cat will need protein immediately to reverse the malnourishment or state of starvation. Your cat may have to be fed by a syringe or tube if he refuses to eat. Consult with your veterinarian Mt. Pleasant, SC for more suggestions. You can also visit their site for additional information.