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Can Cats Die of Old Age? Vet-Approved Facts & Care Tips

Written by: Lindsey Lawson

Last Updated on January 24, 2024 by Catster Editorial Team

senior calico cat on kitchen towels

Can Cats Die of Old Age? Vet-Approved Facts & Care Tips


Dr. Luqman Javed Photo


Dr. Luqman Javed

DVM (Veterinarian)

The information is current and up-to-date in accordance with the latest veterinarian research.

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Our beloved cats give us a lifetime of love, laughter, and joy, but aging will ultimately take its toll on all of us. It’s fairly common to hear that a pet died of old age, but this is a common misconception. Aging, in and of itself, is not a cause of death. That being said, increasing age is considered a risk factor for some diseases in cats.

When a senior cat passes away, it is often the result of various health conditions and organ system failure that is associated with old age. Generally, there will be signs of illness and deteriorating health before death occurs.


The Life Stages of a Cat

Indoor cats live an average of 12 to 18 years but some have even been known to make it past 20. The life stages of a cat are broken up into four categories:

Kitten: Birth to 1 year
Young adult: 1 to 6 years
Mature adult: 7 to 10 years
Senior: 10 years and older

Just because a cat is considered a senior does not mean their health is going to rapidly deteriorate. Each cat is unique, and many factors will play a role in how many years they get here on Earth, including genetics, medical conditions, nutrition, weight, and more. There’s no set age for when a cat will begin to slow down and show signs they are nearing the end.

a woman holding a cat on her lap
Photo Credit: Wanwajee Weeraphukdee, Shutterstock

3 cat face dividerThe 7 Most Common Illnesses in Older Cats

Various health conditions lead to the death of a senior cat. Certain conditions are much more common than others, with the most common illnesses in older cats being:

1. Cancer

Cancer is the leading cause of death among cats and accounts for approximately a third of deaths in cats over 10 years of age. Though the exact cause of cancer is unknown, Feline Leukemia Virus (FeLV), the agent that causes cat parvo, is thought to be a major contributor for cancer formation. Therefore, vaccinations for FeLV are highly recommended for your cat.Other factors that increase the risk of cancers in cats include toxins in their environment, passive smoking, diet, high amounts of exposure to the sun, and their genetics.

Cats can develop many different types of cancers, though some of the more common ones include lymphomas, skin cancers, mammary gland cancers, and abdominal cancers.The initial sign of cancer manifestation is often a lump or bump somewhere on your cat’s body. Additional signs of cancer are as follows:

Signs of Cancer
  • Sores that don’t heal
  • Changes in bowel or urination habits
  • Difficulty eating or swallowing food
  • Unexplained discharge from any orifice of the body
  • Change in appetite (sudden increase or absence of appetite)
  • Weight Loss
  • Stiffness or a change in gait
  • A very foul odor from the mouth
The prognosis for cancer in cats depends on the type of cancer, its level of progression, any concurrent health issues your cat has, and treatment options available (these include surgery, chemotherapy, medication, radiation, or immunotherapy).

2. Kidney Disease

Kidney disease is very common in senior cats and occurs from damage to the kidneys. Signs of kidney disease often don’t show up until the disease has progressed. The kidneys are responsible for removing waste from the bloodstream, helping to regulate certain minerals, conserving water for the body, and producing urine to excrete the waste. In addition, the kidneys produce a hormone known as erythropoietin, which is needed for the release of new red blood cells from bone marrow into your kitty’s bloodstream.

Urinalysis and blood tests will be performed to properly diagnose kidney disease. Your vet may also perform additional diagnostics to have a look at your cat’s kidneys and urinary tract, such as X-rays and ultrasounds.

A short-term injury to the kidney, termed acute kidney disease, usually has a good prognosis if diagnosed and treated promptly. Unfortunately, chronic kidney diseases (CKD) don’t have a specific cure, and treatment involves a method of providing your kitty with comfort and managing other signs of the disease. Prognosis is dependent on the individual, how advanced the disease is, and the response to treatment.

As mentioned before, the signs of kidney disease don’t present themselves until a certain amount of damage has been sustained by these organs. Therefore, it is very important to have routine veterinary check-ups for your cat, which may assist with early detection of a developing health issue. It is advised to have a wellness checkup with your vet at least once for young and adult cats, and twice per year for seniors.

3. Heart Disease

Heart disease is a blanket term for any abnormality of the heart. According to the American Veterinary Medical Association, heart disease can affect as many as 1 in 10 cats worldwide. This is a very serious, life-threatening condition that can be broken down into two separate categories:

Congenital- Typically the result of developmental issues within the heart during fetal development. Congenital heart disease may affect only one kitten within a litter but can also be caused by inherited health disorders that can affect more than one kitten. Unfortunately, these kittens often don’t live as long as other cats do. Therefore, it is important for breeders to properly screen potential parents for genetic issues prior to having litters. If you’re going to adopt or purchase a purebred kitten, ask for proof of genetic tests performed on the parents or the litter to rule out heart issues. Breeds such as the Maine Coon, Bengal, and Siamese are particularly prone to congenital heart issues. Hypertrophic cardiomyopathy is the most common form of heart disease in cats and is often acquired genetically in these breeds.

Acquired- Acquired heart disease refers to the onset of heart disease due to damage to the heart and can be the result of an inherited health condition that developed over time. Hypertension is also common in older cats and can lead to heart issues as well. The exact cause of hypertension developing in older cats isn’t properly understood yet.

old ginger house cat is resting on the couch
Photo Credit: shymar27, Shutterstock

4. Diabetes

Diabetes, known scientifically as diabetes mellitus, is an endocrine disease system that occurs when blood sugar can no longer be effectively regulated by the body. Chronic obesity is one of the leading causes of diabetes in companion animals. Low-quality diets high in carbohydrates are also a common cause of diabetes in cats.

Diabetes must be diagnosed and managed under the care of your veterinarian. Though diabetes can negatively impact your cat’s quality of life and shorten their lifespan, it is important to note that with good compliance on your part, the disease can be managed well, and your cat may have an excellent prognosis depending on other factors (such as a lack of other diseases and no other chronic complications).

The most common complication of diabetes in cats is the development of nervous system issues at their limbs. The main sign of this complication is a weakness of their hind legs. These muscular weaknesses and neural deficiencies can be reversed in some cases; however, this process is slow and often takes months to fully achieve. In addition, cats with diabetes are more prone to infections and often easily succumb to recurrent infections. It is important to work with your vet on a regular basis when dealing with a diabetic cat to manage such complications as best as possible.

5. Arthritis

Arthritis, also known as osteoarthritis or OA, is a condition involving inflammation and degeneration of one or more joints. Arthritis causes pain and inflammation in various joints and will interfere with normal activity.

Arthritis is very common in older cats and often causes them to become less active and sleep more, and prevents them from jumping up onto perches and higher surfaces. Since this condition is painful and undoubtedly lowers your cat’s quality of life, veterinary intervention is highly recommended to manage this ailment.

Sick Cat
Photo Credit: George Hodan, public domain pictures

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Cognitive Impairment in Senior Cats

Though usually not a cause of death, cognitive impairment is an often understudied conditions that many senior cats deal with. This often goes unnoticed but unfortunately does lower their quality of life. The mechanisms and causes of cognitive decline in cats is poorly understood. However, in many ways, cognitive decline in cats is different from that in humans. For example, cats do not develop the same lesions as humans with Alzheimer’s disease do, even when they experience cognitive impairment and decline.

Nevertheless, it is important to note that you gradually find your senior cat “losing their mental edge” and being slow to respond to changes and new stimuli in their environment. They may occasionally forget the location of their litter box, may forget to self-groom, and so on. Therefore it is important to offer additional care and attention for your senior cat. Though cognitive impairment is often unavoidable in senior cats, you may discuss medication (in the form of supplements) with your veterinarian.

In anecdotal cases, the addition of a kitten to the household helped some senior cats “relive” their younger days as they observed a new addition to the family being trained by their human owners. That being said, the decision to adopt a new pet is not one you should rush into and should be well thought out and planned.

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Top 6 Tips for Caring for Your Senior Cat

With the right care and lots of love, you may be able to keep your precious kitty around for as long as possible. Unfortunately, we can’t keep our cats around forever, but some critical tips can help you care for your senior cat and extend their time with you.

1. Pay Extra Attention to Your Senior Cat’s Diet

Since senior cats often slow down in their older years, they will not be expending as much energy. When energy expenditure goes down, nutritional needs change. Talk to your vet about the changes you can make to your cat’s diet to best suit them during their golden years. You want to prevent them from becoming overweight or obese, as it not only puts more stress on their bones and joints but is associated with many health conditions that could shorten their life.

old black and white cat eating
Image Credit: Elizabett, Shutterstock

2. Keep a Watchful Eye on Their Health

You should always be wary of any unusual physical or behavioral signs that could indicate a potential health problem for your cat. Seniors are no strangers to health problems, and it’s best to have them evaluated at the first sign of a problem.

3. Keep Up With Dental Care

Since dental diseases can result in appetite changes in your cat, staying on top of their dental health is imperative. Make sure you keep up with regular dental exams and cleanings and never neglect oral health.
cat brushing teeth
Image Credit: cynoclub, Shutterstock

4. Ensure They Have Access to Clean, Fresh Water

Since kidney disease is a common ailment in older cats, having access to clean, fresh water at all times is a necessity. Be mindful that seniors may not physically be able to access water sources like they could when they were younger and more agile. Cats are often more inclined to drink from moving water sources, such as a pet fountain, as these also pique their curiosity.

5. Ensure They Get Exercise and Mental Stimulation

Regular exercise and mental stimulation are essential for overall quality of life. Take time out of your day to interact and play with your senior cat, even if it is mild and for short periods. Staying active has many benefits and can help increase longevity in the long run.

Tortoiseshell Cat playing on the cat tree
Image Credit: socreative media, Shutterstock

6. Visit the Veterinarian Regularly

It’s always a good idea to keep up with your cat’s routine veterinary exams to ensure they are as happy and healthy as possible. As your cat ages, your veterinarian will likely recommend biannual exams rather than annual exams. Routine care will help identify any health conditions that may be flying under the radar and give you the chance to begin treatment for anything that could be affecting them.

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Cats cannot die of old age alone, but old age is a risk factor that is associated with many ailments in senior cats. Unfortunately, this often results in the development of chronic conditions that eventually lead to a cat’s passing.

Featured Image Credit: Kristi Blokhin, Shutterstock

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