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24 Surprising Vet-Reviewed Facts About Cat Fur

Brooke Billingsley

By Brooke Billingsley

Professional groomer cuts fluffy cat's fur with trimmer in pet beauty salon

Vet approved

Dr. Lauren Demos  Photo

Reviewed & Fact-Checked By

Dr. Lauren Demos

DVM (Veterinarian)

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

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We all know that (most) cats have lots of fur, even if it is short. You may not realize just how interesting cat fur can be, though! Cats’ coats have evolved over thousands of years to become more efficient at keeping a cat protected, helping to maintain body temperature and thus keeping a cat healthy. Let’s talk about all the interesting things you should know about your cat’s fur.


The 24 Surprising Facts About Cat Fur

1.  Grooming

We have all seen our cats grooming themselves. In many cases, we can spot our cats grooming themselves multiple times per day every day. That’s because it’s estimated that cats spend around 30% of their day grooming themselves, which is a lot considering that cats can spend up to 70% of their day sleeping!

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2.  Why Cats Groom

Cats are fastidious groomers, and it is not just to make their coats look pretty. Grooming is used by cats to maintain the health of their coat, remove tangles and debris, remove pests, and even help cool themselves on hot days. It can also remove loose hair that may get left behind, allowing predators to follow a cat in the wild, and it can serve to limit the buildup of scents on your cat’s coat and body.

woman grooming cat
Image Credit: Ihar Halavach, Shutterstock

3.  Double Coats

Like in dogs, some cat breeds have double coats. These coats provide them with an extra layer of protection and insulation, allowing cats with these coats to thrive in extremely cold environments. Extra tufts of hair on the ears and paws also provide extra protection to these extremities. Double-coated cat breeds include the Maine Coon, Norwegian Forest Cat, and Siberian.

4.  Layers of Fur

There are three layers of fur that you’ll find on the average cat: down fur, awn hair, and guard hair. However, humans have created many cat breeds that don’t have all of these fur layers. The Cornish and Devon Rex breeds only have down fur, completely lacking awn hair and guard hairs. The Sphynx and Peterbald breeds only have a “peach fuzz” layer of fur over their body, completely lacking the normal coat layers.

Cat grooming in pet salon
Image Credit: Boling, Shutterstock

5.  Glitter Coats

If you have ever seen a Bengal cat lying in a sunbeam, then you probably noticed that their fur seems to sparkle in the light. That is because these cats have a gene called the “glitter gene” that causes them to grow glittery, almost glowy fur all over their bodies.

6.  Water Repellent Coats

Some of the double-coated cat breeds have even more going on with their coat to keep them safe from the elements. Some double-coated cat breeds also have a water-repellent layer of fur on their coat. This allows breeds like the Turkish Van and Maine Coon to be protected from water, helping them to stay dry and better maintain their body temperature.

Cat Sitting In Bathtub
Image Credit: sophiecat, Shuttertock

7.  Uniqueness

No two cats’ coats are exactly alike, even if they look identical to the naked eye. All cat coats are completely individual and unique, to the same extent as fingerprints among humans. Their fur all has different combinations of colors, layers of colors, and layouts of markings that make each kitty fully unique.

8.  Guard Hairs

The guard hairs present within your cat’s coat are the longer, stiffer hairs that stick out from their coat further than the down fur and awn hair. These stiffer hairs help keep a cat dry, so cats with water-repellent coats are likely to have more guard hairs than other cats. These hairs can also be used to help a cat sense and feel the environment around them. If you’ve seen a cat puffing up their coat in fear or aggression, then you’ve seen a cat using their guard hairs to react to something.

cat taking a bath
Image Credit: AJR_photo, Shutterstock

9.  Black Coats

Although you may come across a fully black cat from time to time, there is only one cat breed that must be fully black according to its breed standard. The Bombay breed is fully black in color, all the way down to their nose, toes, and paw pads.

10.  Rare Coats

There are some coat colors that you’re unlikely to spot in very many cats. In fact, some coat colors you may never see on a cat in your entire life due to their rarity. Cinnamon, lilac, smoke, fawn, and brown are the least common coat colors you’ll see in domestic cats.

lilac and blue british cats on brown background
Image Credit: OksanaSusoeva, Shutterstock

11.  Common Coats

While there are some rare coat colors that you may not get a chance to see, there are some coats that you’ll almost certainly see in many cats. Brown and black tabby markings are considered the most common coat type in domestic cats.

12.  Shedding

If you have an indoor cat, then you’ve likely noticed that your cat seems to shed regularly throughout the year. They may have heavier shedding periods during season changes, but indoor cats are likely to shed consistently throughout the year. However, outdoor cats are considered less likely to shed year-round, instead usually having only one or two big sheds per year.

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13.  Orange Coats

If you’ve ever heard that most orange cats are male, that’s because the orange coat color is linked to the chromosome that controls a cat’s sex as well. In fact, about 80% of orange tabby cats are male.

14.  Calico Coats

Like the orange coat gene, the gene that causes a cat to have a calico coat is also linked closely to sex. Most calico cats are female, but you will see a Klinefelter calico (male cat with an extra X chromosome) cat pop up on occasion. The rate of calico males is about 1 in 3,000 cats.

calico british longhair cat
Image Credit: Nils Jacobi, Shutterstock

15. Weight

For cats with minimal fur, their coat doesn’t notably impact their body weight. For short-haired cats, their coat makes a negligible impact on their body weight. However, some estimates say that cats with long-haired double coats may have up to 25% of their body weight consisting just of the weight of their coat.

16.  Hypoallergenic Coats

No cat is truly hypoallergenic because allergies to cats are caused by proteins that cats produce. These proteins are found in their skin and body fluids, including saliva and anal glands. The shedding of dander from their skin and coat is the main reason that people have an allergic reaction to cats. However, some breeds, like the Russian Blue, produce notably lower levels of the protein that causes allergic reactions: Fel d1.

russian blue cat sitting near feeding bowl
Image Credit: slawomir.gawryluk, Shutterstock

17.  Number of Hairs

You may have tried to guess how many individual hairs are present on your cat, and it’s possible that you were way off. It’s estimated that most cats have an average of 130,000 individual hairs on their bodies!

18.  The Longest Coat

Sophie, a rescue cat living in California, holds the Guinness World Record for having the longest coat on record. She’s held the record since 2013 when her fur was measured at just over 10 inches in length.

19.  Haircuts

It’s generally advised to avoid shaving a cat unless it’s absolutely necessary for their health. Why? Well, a cat’s coat is designed to help keep them insulated, helping them to maintain their body temperature, even in warm weather. By shaving a cat’s coat, they may have trouble maintaining an appropriate body temperature in hot weather. In some cases, though, shaving a cat is necessary if they are severely matted or injured.

persian cat getting a haircut
Image Credit: artcasta, Shutterstock

20.  Points

Some cat breeds, including the Siamese, Tonkinese, Oriental Shorthair, and Balinese, have pointed coats. This means that their overall coat is lighter, while darker fur occurs on extremities, like the ears, snout, feet, and tail. This is because these cats have a tyrosine defect, which means that the tyrosine enzyme functions best in cooler areas of the body, leading to darker fur on extremities. The central parts of the body stay warmer than the extremities, leading to lower function of tyrosine and a lighter-colored coat.

21. Rusted Cats

If you have a black cat, you may have noticed that they appear slightly reddish or brown in bright lighting, especially in direct sunlight. This is because black cat coats “rust” as they age, leading to a brownish tint to the coat. This tint is typically only visible in bright lighting, though.

black cat sitting beside the water fountain
Image Credit: Vershinin89, Shutterstock

22. Standing Hairs

Have you ever wondered how cats are able to stand their hair up and fluff out their coat? Each follicle of a cat’s hair is connected to tiny muscles in the skin. These muscles, the arrector pili, allow the cat to stand their hairs on end or lay them flat. Many mammals, including humans, have these muscles, which is what allows the hairs on our arms to stand on end when we get goosebumps.

23.  Coat Patterns

Although some coat patterns are commonly linked to specific breeds, like pointed coats and Siamese cats, coat patterns are not breed-specific. While some patterns are not accepted within certain breeds, the presence of a certain pattern doesn’t mean a cat belongs to a specific breed. This is why markings like calico, tabby, tortoiseshell, and tuxedo are commonly seen in mixed-breed cats.

ragamese siamese ragdoll cat
Image Credit: jolanchapin, Pixabay

24.  Persians

Some cat breeds only accept one solid coat color as their breed standard, while others may accept a handful of colors and markings. However, the Persian may have the most accepted colors and patterns of all developed cat breeds. You can find around 80 different patterns and colors that are accepted within this breed.



Wow! There’s a lot we can learn about our cats’ coats. The more you know about your kitty’s coat, the better care you can provide for it. Make sure to research how to properly care for your cat’s skin and coat, regardless of the breed or type of cat you have.

Featured Image Credit: Yolya Ilyasova, Shutterstock

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