This is a page that gives some clues as to cat health trends in the USA backed up by statistics.

Banfield Pet Hospital is the world’s largest veterinary practice. It is an American business operating in America. The company has a poor policy on declawing, which I have to mention as they dealt with 430,000 cats in 2011. Message to Banfield: Come on Banfield, please stop declawing, period. Lead the way. It’ll make more money for the business in the long term, I promise.

However, because Banfield are so large they are able to compile information on trends that can be relied on due to the high number of cats treated. See full report – note: the page you are reading carefully summarizes the report in respect of cats.

Here are some trends and statistics about cats from Banfield that relate to 2011 showing trends since 2007.


This is my observation having read the report: If there are three things a cat owner can do to most improve the health of their cat it is to (a) feed them less and exercise them more and (b) take them to the vet when they are ill. Don’t try and fudge it. Spend the money but take charge of the consultation and (c) feed mainly high quality wet cat food. Only 28% of cat owners take their cat to the vet to manage “an existing condition or disease” (compared with 36% of dog owners). Of 6 cats and dogs seen at the hospital, only 1 is a cat (people don’t take cats to the vet anywhere near enough).


Since 2007 obesity has increased by 90% in cats (dogs by 37%). 69% of cat owners see their cat as having the correct weight. 22% of cat owners see their cat as overweight. About 20% of cats are overweight to varying degrees according to the chart above.

Comparison: a different survey states that 58.3% of US cats are overweight or obese1. 13.9 million cats in the USA are obese1. 33.9% of cats are an ideal weight1.

Comparison with UK: PDSA survey states that 25% of cats in UK are overweight.

As a food treat (human food) cheese is the most calorific.

Obesity in cats2 can have a knock-on effect on cat health with respect to: arthritis, diabetes mellitus, heart disease (heart murmur symptoms) and hypothyroidism (under production of thyroid hormone).


Of all the cats with arthritis, 37% of them are overweight.

There has been a 67% increase in arthritis in cats over the past 5 years. 73% of cat owners don’t realise that weight gain can lead to arthritis. Note: think of the overweight people you see who have difficult walking and have bad knees.

Chronic Illnesses

Most common chronic (long term) disease are: dental disease, dermatitis (skin infection), diabetes and ear infections (otitis externa). Chronic diseases are increasing.


Feline diabetes increased by 16% since 2007.

Most Common

The most common disease affecting cats and dogs is dental disease. It increased by 10% since 2007.

The second most common disease – ear infections – increased by 34% over the same period.

Kidney Disease

Cats are 7x more likely than dogs to have kidney disease. Over half of cat owners don’t know that cats can have kidney disease without looking as if they are ill. Arkansas, Colorado and Arizona had the highest levels of kidney disease in cats. 29% of cats with kidney disease had gum disease. 8.3% of geriatric cats had kidney disease.


Hyperthyroidism features in the Banfield report. This is an overactive thyroid gland producing too much thyroid hormone. It is on the increase – 13% since 2007. 1% of American cats have hyperthyroidism. The worst states are: South Dakota, Montana and Massachusetts. Signs: changes in coat, changes in appetite and “unusual urination”. Almost half of cat owners were not aware that these are signs of hyperthyroidism.


85% of cats seen are freeborn (random bred). Of the remainder the most common breeds were: Siamese, Bengal, Manx, Himalayan, Persian, Russian Blue, Maine Coon and Ragdoll.

Age Groupings – illnesses

Looking at age groups (a) 0-1 years of age, juveniles (b) 1-3, young adult (c) 3-10, mature adult (d) over 10, geriatric…and the prevalence of disease amongst these groups:

  • Conjunctivitis – mostly affects juveniles
  • Cystitis – mostly affects geriatric, least in juveniles
  • Dental tartar – mostly mature adult, least juveniles
  • Ear mites – mostly juveniles, least geriatric
  • Respiratory virus – mostly juveniles, least geriatric
  • Fleas – most juveniles, least geriatric
  • Healthy – most juveniles, least geriatric
  • Heart murmur – most geriatric, least juveniles
  • Hyperthyroidism – most geriatric
  • Kidney disease – most geriatric
  • Obese – most mature adult, least juveniles
  • Ear infection – most juveniles, least young adult
  • Overweight – Most mature adult, least juveniles
  • Gum disease – most young adult
  • Roundworms – most juveniles
  • Tapeworms – most juveniles, least geriatric.


  2. Obesity defined as being 20% or more above ideal weight.
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Michael Broad

Hi, I'm a 71-year-old retired solicitor (attorney in the US). Before qualifying I worked in many jobs including professional photography. I have a girlfriend, Michelle. I love nature, cats and all animals. I am concerned about their welfare.

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