5 Most Dangerous Cat Diseases

According to the Humane Society of the United States, there are more than 70 million feral and stray cats roaming the streets. Because stray cats often carry dangerous diseases, the best thing that you can do to protect your domesticated cat against serious illness is to keep it indoors. By staying inside, your cat is less likely to fight with other animals and risk the chance of spreading diseases through wounds. You’ll also keep it away from infection-spreading parasites, including fleas and ticks, and prevent the kidney failure that can come as a result of ingesting poisonous substances such as antifreeze.

Outdoor cats and those that live in multi-cat homes have the highest risk of disease. However, indoor cats and “only cats” can get sick, too. The good news about cat illnesses is that most are easily preventable; the bad news is that once your cat contracts an illness, it can be very difficult to treat. It’s also important to keep in mind that even minor ailments can suggest major health problems. But some cat diseases are more dangerous than others. Read on to learn about some of the most serious ones.

Feline leukemia is a disease that spreads through urine, nose discharge and saliva. Cats can catch the disease through bites, sharing food and water bowls, and from simply living together. Mother cats can pass the disease along to their kittens, and kittens are more likely to contract the disease than adult cats.

Some cats will immediately become ill upon contracting the virus; however, in other cats, symptoms of the disease will not manifest for several weeks. Feline leukemia can result in a number of conditions, including system-wide infections, diarrhea, skin infections, eye disease, respiratory tract infections, bladder infections, infertility, anemia and cancer. Any severe chronic illness can be a sign of feline leukemia.

Although there is no cure for feline leukemia, the disease is easily preventable. Keeping cats indoors, restricting exposure to other cats, maintaining a clean living environment and ensuring your cat is vaccinated can all help prevent feline leukemia. According to the Merck Veterinary Manual, veterinarians rarely see cases of feline leukemia among vaccinated cat populations.

Unlike human immunodeficiency virus (HIV), sexual contact is not a major factor in transmitting feline immunodeficiency virus (FIV). It primarily spreads through bite wounds, and outdoor cats and territorial tomcats are most susceptible to infection www.thekittenpark.com . However, unlike feline leukemia, casual contact through sharing food and water bowls doesn’t significantly the increase risk of contracting FIV. Although a mother cat may pass the virus along to her kittens, this happens rarely.

Once the virus enters the bloodstream, it can remain dormant until it progresses into an active disease. FIV is terminal, and because it targets the immune system, cats that have the disease run an increased risk of enlarged lymph nodes, ulcers of the tongue, inflamed gums, progressive weight loss, poor coat and skin disease, diarrhea, anemia, eye disease and cancer.

To prevent FIV, keep your cat indoors and up to date on vaccinations. According to CatHealth.com, vaccinating for this virus after your cat is at least 8 weeks old can prevent infection about 60 to 80 percent of the time after three doses.


Renal failure, which is caused by kidney disease, is one of the leading causes of death in older cats. Causes for kidney disease include age, genetics and environmental factors such as access ingesting poisonous substances. Renal failure in cats can take two forms: acute or chronic. Acute renal failure is associated with a sudden stop of kidney function, while chronic renal failure results from a progressive deterioration of kidney function.

A number of symptoms can show up as a result of kidney disease, including excessive urination, increased thirst, nausea, a grinding or cracking sound in the jaw, vomiting, dehydration, constipation, loss of appetite, weight loss, halitosis (ammonia smell) and lethargy. If your cat is experiencing any of these symptoms, your vet can test for kidney disease and renal failure. Urinalysis can test to see if the cat’s urine is diluted, which indicates that its kidneys aren’t passing waste. Blood tests can check on creatinine and BUN (blood urea nitrogen) levels. An elevated creatinine level can be a sign of loss of kidney function.

Although there is no cure for feline kidney disease, you can treat it through adjustments to your cat’s diet, medication and diuresis (hydration therapy). According to the Merck Veterinary Manual, the animals receiving treatment can survive for long periods of time using only 5 to 8 percent of their renal tissue.

Feline panleukopenia, also known as feline distemper, is a highly contagious viral disease in cats. Kittens are most at risk, and they almost always die — even if given treatment — after contracting the disease. It can spread through bodily fluids, feces and fleas, and is usually transmitted by contaminated food and water bowls, litter trays and clothing.

Feline distemper affects cats’ intestinal tract and attacks their immune systems. Cats suffering from the disease are likely to experience diarrhea, vomiting, dehydration, malnutrition and anemia. Symptoms include depression, loss of appetite, lethargy, and tail and back leg biting. A vet can diagnose feline panleukopenia through fecal and blood tests.

Treatment of feline panleukopenia is aggressive, since the disease can kill within a day of contraction. Cats usually receive blood transfusions, antibiotics and vitamin injections to combat the disease. According to The Merck Veterinary Manual, vets see few cases of feline panleukopenia among vaccinated cats, but infection rates remain high in unvaccinated populations. In order to prevent feline panleukemia, you should vaccinate your cat and keep it away from unvaccinated and feral animals.

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