Do Cats Go Gray With Age? (And Why Gray Cats Turn Brown)
Some cats go gray, many never do, and gray cats have a habit of turning brown instead. Here's what's normal and when to call the vet.
Farah Wallberg
Former veterinarian
Humans find their first gray hair and panic. Dogs go gray around the muzzle and somehow look wiser for it. Cats? Most of them stroll into old age looking exactly the same, which honestly feels a bit unfair to the rest of us.
So do cats get gray hair? Some do, many don't, and the coat changes owners notice most often aren't gray at all. Below I'll explain when cats go gray, why gray and black cats sometimes turn brown, and which color changes are worth a trip to the vet.
Do Cats Get Gray Hair as They Age?
Yes, some cats get gray or white hairs in old age, but it's far less common than in dogs or people. Dr. Debra Primovic, a veterinarian writing for PetPlace, puts it plainly: most cats keep almost all of their original color for life.
When graying does happen, it usually shows up:
- Around the muzzle and whiskers first, then sometimes around the eyes
- In senior cats, often well into their teens, and some cats never go gray at all
- Most clearly on dark coats, since a few silver hairs stand out on a black cat and vanish on a gray one
That last point is the joke of this whole article. If your cat is already gray, you may never notice them going gray. Built-in camouflage, really.
Signs of Graying vs Other Coat Changes
Not every color change is graying. This quick table shows what you're probably looking at:
| What you see | Likely cause | Worry? |
|---|---|---|
| A few silver hairs on the muzzle | Normal aging | No |
| Black or gray coat turning reddish-brown | Sun bleaching or diet (low tyrosine) | Usually not, but check the diet |
| Kitten coat changing color in year one | Adult coat coming in | No |
| White hairs on an old scar | Follicle damage from the injury | No |
| Dull, greasy or patchy coat | Possible illness or poor grooming | Yes, see your vet |
| Sudden white patches of skin and fur | Rare pigment conditions | Yes, see your vet |
Why Is My Gray Cat Turning Brown?
Gray and black cats can develop a brownish or rusty tint, and the two most common causes are sunshine and diet. Owners call it "rusting". It looks dramatic, but it's usually harmless.
A gray coat is really a diluted black coat. Both colors come from the same dark pigment, eumelanin, which is why the same things can make them turn brown. If you're curious how that works, I explain the dilution gene in my post on whether gray cats are rare.
1. Too much sunbathing
Every gray cat owner knows the one sunny patch on the floor that belongs to the cat and nobody else. Hours of strong sunlight can bleach dark fur, much like it lightens human hair in summer.
VCA Animal Hospitals notes that a sun-loving cat's coat can get bleached by UV rays.
The tips of the hairs usually change first, so the coat looks rusty on top and darker underneath.
2. Not enough tyrosine in the diet
To make dark pigment, cats need two amino acids: tyrosine and phenylalanine. A study by veterinary nutritionists at UC Davis found that black cats fed a diet low in tyrosine turned reddish-brown, and their black color came back when the diet was corrected (Yu, Rogers and Morris, 2001).
The researchers also found that cats may need more of these amino acids for a fully dark coat than standard growth recommendations provide. Most complete, good-quality cat foods are fine, but a homemade or very unusual diet is worth checking with your vet.
3. Age
VCA also notes that an aging black coat may drift toward brown before any gray appears. The same can happen to gray cats, which is why an older gray cat sometimes looks a little warmer in tone.
Do Gray Kittens Get Lighter or Darker?
Yes, a kitten's coat often changes during the first year as the adult coat grows in. A few common changes:
- Ghost stripes fade. Many solid gray kittens show faint tabby markings that disappear as they grow up.
- The shade settles. A fluffy kitten coat can look lighter or patchier than the sleek adult coat underneath.
- Colorpoint cats darken. Breeds like the blue point Siamese are born almost white and develop their gray points over time.
So don't fall in love with an exact shade at eight weeks. You might get a slightly different cat at eight months, and they'll be just as perfect.
When a Color Change Means a Vet Visit
As a former vet, here's my honest rule: slow, even changes are usually fine; sudden or patchy ones deserve a checkup. Book an appointment if you notice:
- Sudden white or pale patches of fur or skin, especially around the face
- Bald spots, scabs, redness or a lot of scratching
- A dull, greasy or unkempt coat in a cat who used to groom well
- Coat changes plus other signs like weight loss, more thirst or a change in appetite
In older cats, a scruffy coat is often a sign that grooming has become harder, for example because of sore joints, or that something like kidney disease or an overactive thyroid is going on. Coat color alone won't tell you which, so let your vet take a look.
How to Keep a Senior Gray Cat's Coat Healthy
You can't stop the gray hairs, and you shouldn't want to. Senior cats are glorious. But you can help an older cat's coat stay soft and clean:
- Brush gently a few times a week. Older cats often can't reach their back and hips as well. A soft tool like our 3-in-1 cat brush makes it a nice ritual rather than a wrestling match.
- Feed a complete, quality diet made for your cat's life stage.
- Offer shade near the sunny spots if rusting bothers you. Your cat will still choose the sun.
- Keep up regular vet checkups, especially once your cat is a senior.
For more on caring for gray cats at every age, my complete guide to gray cats covers grooming, nutrition and breed-specific health.
FAQ: Do Cats Go Gray?
At what age do cats get gray hair?
There's no set age. When it happens at all, it's usually in senior cats, often in their teens, and it starts around the muzzle and whiskers.
Why don't cats go gray like dogs?
Nobody knows for sure. Many cats simply keep their pigment for life, and graying in cats is described by vets as uncommon and inconsistent.
Why is my black cat turning gray?
Usually age: a few gray hairs around the face are normal in older cats. If gray or white patches appear suddenly, or the skin changes too, see your vet.
Why is my gray cat turning brown?
Most often from sun bleaching or a diet low in tyrosine. It's usually harmless and reversible, but ask your vet if it comes with other changes.
Can a cat's fur color change from stress?
There's no good evidence that stress turns cats gray. Stress can cause overgrooming and bald patches, though, which is worth a vet visit.
Do gray cats get darker as they age?
Some kittens darken as their adult coat grows in. In adulthood, gray cats more often get slightly warmer or browner in tone than darker.
Gray hairs or not, an old cat curled up in their favorite spot is one of the best sights in any home. Every silver whisker was earned, usually by supervising you very closely for a very long time.
