Bowel Cancer in Cats

Symptoms of intestinal cancer, bowel cancer can be difficult to diagnosis there are four stages which affects each part of the intestine and other organs, this mostly affects cats six years or older.

Some of the symptoms are as follows and can be fatal.

  • Reduced appetite.
  • Weight loss.
  • Lethargy.
  • Stomach growling.
  • Blood in stool.
  • Black stool.
  • Chronic intermittent vomiting.
  • Blood in cat stool and very smelly
  • In most cases smelly stools of a few days’ duration in an otherwise healthy cat are not serious, but if diarrhoea and foul odours persist or are accompanied by listlessness, blood in stools, vomiting or diarrhoea, it could be an emergency.


Dying cats might begin to look messy and unkempt with dull coats and might even develop a detectable odour. The odour is usually due to toxins building up in the body because of illness.

Why is there bright red blood in my cat's stool?

Causes of blood in cat poop include food allergies or eating something unsuitable, infection, parasites, reaction to some medications, anal gland issues and colitis (inflammation of the large intestine). Even stress can cause blood in your cat's poo, for instance if you've recently moved house or it's fireworks season.


Hematochezia is the passage of fresh blood per anus, usually in or with stools.

Remember, hematochezia is caused by bleeding in the colon, which is close to the anus. The blood only travels a short distance, so it's still fresh by the time it leaves the anus which is why it is bright red.

Most common causes are hemorrhoids and diverticulosis, both of which are relatively benign; however, it can also be caused by colorectal cancer, which is potentially fatal.

This can develop quickly over a short time and be very aggressive.

A vet wrote about her three cats that died from cancer.

So, What Is Cancer, exactly?

Simply put, cancer is a disease where the DNA (genetic code) of a normal cell becomes damaged, causing the cell to mutate. This damage can be caused by a virus, radiation, exposure to chemicals (such as pesticides or herbicides), or some types of hormones. The negative effects of these agents can build up over the years, which could explain why so many cancers affect older animals.

Cancer in cats has a definite hereditary component. Siamese cats are prone to developing several different types of cancer.

The damaged cell begins to go rogue and starts replicating itself, unchecked. The resulting cells then invade surrounding tissue, where they cause new blood vessels to grow around them to supply them with nutrients. This is what allows the cancer to spread (or metastasize) to other areas of the body.

Although many things can contribute to cell damage, in most cases the exact cause of a pet’s cancer is never identified. Both the environment and heredity may contribute to the development of cancer in cats, but most times we never know what really causes it.

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