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.
The many rules of thumb that are available to compare cat ages to human ages are usually based upon total life expectancy. An average catâs life expectancy is around 17 years, and a humanâs is around 84 years. This leads to a rough equivalency of five-to-one. But it is not an apples-to-apples comparison.