Fatigue is a symptom, rather than a sign. A symptom is something the patient feels and describes, such as a headache or dizziness, while a sign is something the doctor can detect without talking to the patient, such as a rash. Fatigue is a non-specific symptom, i.e. it may have several possible causes.
Indoor Cats. Indoor cats can live a long life, provided they're well taken care of and they're in good health. On average, indoor cats live 12 to 15 years. A cat may reach the age of 21, if he doesnât have any medical conditions and has a proper diet.
Cat life expectancy. Cats have been documented to live over 30 years. In the Guinness Book of World Records, the oldest cat is 34-36 years old. In human years, a 30-year-old cat is over 130, and a 34-36-year-old cat is between 150-160. In Scotland, a cat is reported to have lived to be over 40 years old.