Treatment FAQ

what causes a dog's fur to turn brown and treatment

by Prof. Vita Lowe MD Published 2 years ago Updated 2 years ago

When in contact with a dog’s coat, yeast and porphyrin

Porphyrin

Porphyrins are a group of heterocyclic macrocycle organic compounds, composed of four modified pyrrole subunits interconnected at their α carbon atoms via methine bridges. The parent porphyrin is porphine, a rare chemical compound of exclusively theoretical interest. Substituted porphines are ca…

can both result in staining fur a dark red or brown color. Fur staining is a common condition among a variety of breeds and especially noticeable on dogs with white fur. There are medical and non-medical treatment options available depending on the cause of the staining.

Porphyrins are iron-containing molecules produced when the body breaks down red blood cells. They are removed from the body primarily through feces, but are also in urine, tears and saliva. Brown fur staining is primarily caused by an infection with the yeast Malassezia.Oct 1, 2019

Full Answer

Why is my dogs fur turning brown on his feet?

If you see your dog's white fur turning brown, it could be caused by tears, food, or even the water he drinks. Molecules called porphyrins are excreted through tears, saliva, and the pads of the feet. The iron in these molecules turns fur brown. These stains can darken when exposed to sunlight.

Are all dogs affected by brown fur?

Some people believe that only white dogs are affected by browning or discolored fur. The truth of the matter is that dogs with darker fur are affected as well; their darker fur simply hides the staining better.

Why is my dog's muzzle reddish brown?

For example, if your pup's snowy muzzle has become a reddish brown, she may be licking her lips too much and need a dental exam. If she licks her paws or pads so often that they turn color, she might be trying to remove a burr or she could be having an allergic reaction.

Can a dog's white hair turn brown?

Sometimes, a dog's white hair will turn brown. It's natural for your dog's white fur to undergo some discoloration. It's not always possible for dogs to keep themselves perfectly clean, and things that would easily blend in on a brown-hair dog really stand out on a dog with white fur. A dog's white fur turning brown is not uncommon or serious.

How do I get rid of my dogs brown fur?

In a small bowl, mix a teaspoon of hydrogen peroxide with a teaspoon of cornstarch to form a paste. Apply the paste directly to the stained fur and let sit for at least two hours. Wipe off with a damp cloth, using care not to get the paste in the eyes.

Why is my white dog's fur turning brown?

One of the best-known porphyrins is heme, the pigment in red blood cells. If you have ever noticed a white dog that has been licking or chewing on his leg, the hair in that area will turn iron-brown in color. The actual cause of stains is the porphyrin in the tears and saliva.

How do you get brown stains off a white dog?

Make a paste of baking soda and water, and brush it into the stain. Let dry and then wipe off with a damp cloth.

How do I get my dog white again?

Keeping white dogs clean can seem like an impossible task, but with regular bathing using shampoo to whiten dog fur, your pup will be stain-free in no time. In between baths, use pet wipes and brushing to whiten the coat. Deal with tear stains by cleaning the eyes daily to get rid of any spots.

Can I put baking soda on my dog?

Baking soda is often used around the home for a fresh, clean scent. Using it on your dog is just as easy. Be sure to cover your dog's fur, not just sprinkle a small amount, for deodorizing and neutralizing odors. Brushing your dog before a wet or dry bath will help the baking soda work more effectively.

How do I get rid of my dogs porphyrin?

Contact lens solution can be used to clean around the eyes—not in the eyes! The boric acid in the contact lens solution oxidizes the iron in the porphyrins and may lighten the staining. After washing the face, always dry the area with a clean towel to prevent ulcerative dermatitis secondary to wet skin.

How do groomers get dogs so white?

Bluing shampoos work by adding optical enhancers to the strands of hair. The human eye perceives these enhancers as white, making your dog look bright and brilliant. In addition, the blue hides yellowing of the hair caused by urine or licking.

Why is my dogs fur stained brown?

Brown fur staining is primarily caused by an infection with the yeast Malassezia. This is the yeast that is responsible for skin and ear infections in dogs. It is possible that your dog has both conditions.

Why is my dog's fur turning reddish brown?

At the chemical level, red-brown fur staining is caused by a compound called porphyrin. Porphyrins are iron containing molecules produced when the body breaks down red blood cells. They are removed from the body primarily through faeces. However, porphyrin can also be excreted through tears, saliva, and urine.

How do I use hydrogen peroxide to whiten my dog's fur?

Create a paste of hydrogen peroxide and cornstarch. Apply the paste to the stained area on your dog's coat and work it into the fur with your hands. Keep the peroxide paste on your dog's coat for five to 15 minutes, depending on the severity of the stain.

Can I wash my dog with baking soda and vinegar?

Baking soda works to remove odors from your dog's skin and fur. The baking soda paste should be applied before the shampoo and can be washed off as you lather homemade dog shampoo and then rinse both items off the dog with warm water. In a big spray bottle, put 2 cups of warm water with 1/2 cup of white vinegar.

Will hydrogen peroxide bleach my dog's hair?

If your dog has a thick, double coat, you will need to use more of the solution to get good coverage. You want to penetrate through the hair and get all the way to the skin. (Keep in mind that the hydrogen peroxide may bleach your dog's hair.)

Why does my dog lick my skin?

Inflammation can also be caused by items embedded in the skin, painful joints, flea bites, etc. Infection - Bacterial, fungal, or even parasitic infection of the skin can motivate our pets to strive to resolve the issue themselves by licking or chewing.

What is the substance that stain fur?

Saliva and tears contain substances called porphyrins, which stain light fur pink, red or brown. Porphyrins are organic, aromatic compounds that make up many important structures in the body. The term porphyrin comes from the Greek word πορφύρα ( porphura ), which translates as ‘purple.’. Although I have never seen a pet with a purple beard, ...

Why is it so hard to chew food?

Difficulty chewing food - Problems chewing food can cause saliva to be unevenly distributed in the mouth and trickle down the sides of the mouth. Chewing difficulties are commonly associated with periodontal disease, fractured teeth, and oral tumors.

Why does my dog have a lot of saliva?

As a result, more saliva is produced in attempt to rid the bacteria from being absorbed through the gums into the bloodstream. Periodontal infections such as tooth abscesses can also create the sensation of nausea and cause drooling.

Why does my dog's saliva leave his mouth?

Conformational abnormalities - If your pet can’t properly close his mouth or if he has unnecessary skin folds in his lips, saliva can exit the mouth and accumulate on the hair around your dog’s mouth.

What happens if a dog's eye is abrasion?

Trauma - Injuries from an object or abrasion from a pet’s paw can damage the surface of the eye ( corneal ulcer) and lead to increased tear production.

Can dogs lick their fur?

This can happen to any part of your dog’s body that he likes to lick or chew, such as the fur on your dog’s feet or the fur around the eyes. While it’s harmless for the most part, there are some medical conditions that could cause excessive staining in your dog’s fur. "It’s quite common for light-haired canines to have color changes in ...

Why is my dog's licking brown?

Allergies or skin problems should also be ruled out as these can trigger excessive licking that results in brownish stains on other parts of the dog's body.

Why is my Labrador's head turning brown?

A Labrador puppy may have a lot of black on the top of the head that may turn to brown once around the age of 1 year old. Puppies go through a temporary shed, leading them to losing their puppy coat. Occasionally, darker skin color may also arise around the beginning of hormonal changes (female dog going in heat).

Why does my dog's coat lose pigment?

This loss of pigmentation in the dog's coat occurs because pigment takes quite a good amount of energy to make and the body focuses on tending towards other more important needs. As long as there is no irritation, redness or undesirable smells, there should be nothing to worry about.

Why does my dog's coat die?

Gabby. This condition can be caused by an autoimmune disease, genetic factors or a virus , but sometimes its exact causes remain unknown.

What happens when a dog loses pigment?

In this case, the loss of pigment mostly affects the dog's nose, lips, and face and it can be temporary or even permanent. What happens is that, melanocytes, the cells responsible for giving pigment to the dog's coat die or no longer function, explains veterinarian Dr. Gabby.

What color is my dog's face?

This is mostly seen in dogs with candid white coats that attain pink, red or brown colors around the eyes and mouth area.

Why does my dog's hair change color?

Loretta. In the areas of previous trauma such as a surgical incision site, a clipper burn or even a hot spot , the hair may therefore grow darker in color.

Why is my dog's fur brown?

Brown fur staining is primarily caused by an infection with the yeast Malassezia. This is the yeast that is responsible for skin and ear infections in dogs. It is possible that your dog has both conditions. Excessive eye discharge can mean chronic eye infection or blocked tear ducts, while dental problems — common in small breeds — can lead ...

Why does my dog have red fur?

This is a very prevalent problem in dogs, and is especially evident in those with white coats. Red fur staining is caused by a compound called porphyrin. Porphyrins are iron-containing molecules produced when the body breaks down red blood cells. They are removed from the body primarily through feces, but are also in urine, tears and saliva.

Why does my dog lick his paws?

Dogs with seasonal allergies may lick their paws and legs, the saliva staining the fur red. Then when brownish discoloration develops in the moist fur, the yeast infection sets in. The yeast thrives where the fur is moist, especially in the external ear canals, under the eyes and around the lower jaws, where the fur is moist from saliva ...

Why does my dog's eye discharge?

Excessive eye discharge can mean chronic eye infection or blocked tear ducts, while dental problems — common in small breeds — can lead to excessive salivation. Both secretions carry porphyrins that stain the fur. Dogs with seasonal allergies may lick their paws and legs, the saliva staining the fur red.

How long does it take for a dog to dry out?

Dry him well, then apply apple cider vinegar, rub it well into his fur, then wipe him semi-dry after 10 to 15 minutes.

Why does my dog's fur turn brown?

Your dog's saliva can also give her white fur a brownish hue. If she obsessively licks particular body parts, you may notice the fur in that area turn reddish-brown. Be aware that excessive licking can be a sign of allergy or other health concerns. For example, if your pup's snowy muzzle has become a reddish brown, she may be licking her lips too much and need a dental exam. If she licks her paws or pads so often that they turn color, she might be trying to remove a burr or she could be having an allergic reaction. If you notice one spot on her coat is discolored, check her skin; she may be licking a spot that has a wound or is irritated by fleas.

Why are my dogs eyes brown?

Excessive tearing can cause rusty brown marks under your pet's eyes. Canine tears contain porphyrin, a pigment that colors fur a brownish-red. If your dog's eyes are teary, they may not be draining properly or may be irritated by an eyelash or other debris. Weepy eyes can also be a sign of eye disease, such as glaucoma, or an eye infection. Teary eyes are a common problem among many breeds, but discoloration is most noticeable on light-colored coats.

How to make a white dog's coat glow?

Treat brown stains immediately to prevent buildup and bathe her to remove dust and debris from her fur. Try special shampoos designed to eliminate stains and boost the coat's natural color. Color-enhancing shampoos and rinses can temporarily brighten a dull coat and lighten stains caused by excessive licking or tearing. Enhancing shampoos are available for black, blue and silver dogs, too. If your pet suffers from tear stains, try wiping under her eyes with a cloth dipped in hydrogen peroxide twice each day.

What to do if my dog's fur turns brown?

According to Four Paws, pet wipes are your friend in this battle. Use pet wipes to gently wipe the eye area and wipe around the mouth to remove food stains. It's easier to prevent stains than to try to get rid of them once they start.

Why do porphyrins turn brown?

Porphyrins contain iron and are produced when the body breaks down red blood cells. Molecules containing porphyrins are excreted through tears, saliva, and the pads of the feet. It is the iron in the molecules that causes the dark red or brown staining. These stains can get even darker if they are exposed to sunlight.

How to get rid of dog urine stain?

If the staining is from urine, try wiping your pet with a wipe right after urinating to keep the area clean. Apply full-strength shampoo on the spot, letting it sit for a few minutes before rinsing it. Advertisement. The bichon frise is a dog with fluffy white fur.

How to get rid of food stains on dogs?

According to Four Paws, pet wipes are your friend in this battle. Use pet wipes to gently wipe the eye area and wipe around the mouth to remove food stains. It's easier to prevent stains than to try to get rid of them once they start. A brown-hair dog or any dog with darker fur can benefit from these cleaning regimens too.

What is a bichon frise?

The bichon frise is a dog with fluffy white fur. According to the Bichon Frise Club of America, keeping the face clean is the first line of defense against a dog's white fur turning brown.

Why do dogs have tears on their faces?

According to the American Maltese Association, any breed of white-furred dog can exhibit staining on the face from tears. Genetics that cause a dog to create excess tears can lead to more tear staining than another dog, even one from the same litter. The tear staining is due to a molecule in the tears called porphyrins.

How to get a dog's fur white?

Keep fur white. When you brush your dog, sprinkle a little corn starch on her. Corn starch absorbs oils, covers up many stains, and removes odors. There are also some commercially available dog-whitening shampoos. For serious stains, combine baking soda and water into a paste and then brush it into the stain .

Why is my black dog turning brown?

If your black dog is turning brown, that typically means they’ve had extended periods of sunlight on a consistent basis. For some dogs, it could also be part of the natural aging process. Some dogs’ coats change color as they age. Regardless of the cause, you likely have nothing to worry about.

Why is my dog's fur red?

Things like hyperthyroidism and side effects to medications can cause these reactions as well as a pigment change in the fur.

Why does my hair color change?

If symptoms such as redness and irritation occur along with hair loss, there’s a possibility that the color is changing due to an underlying health condition or poor nutritional balance.

What to do if my dog's coat changes color?

If your dog’s coat changes colors, we recommend keeping an eye on your dog the next few days, especially if they are on medication or have a known health condition. Otherwise, there’s no need to panic. In most cases, this is a natural process.

What to look for in dog food?

When buying your furry friend’s food, look for foods with copper, zinc, omega-3, and omega-6 fatty acids.

Why does my dog's hair bleach?

Extended periods of sunlight on a consistent basis can cause a sun bleach effect in your dog’s coat. This response is because of the UV rays of the sun damaging and destroying melanin in the hair.

Can you bleach your dog's coat?

In some situations, it is possible to prevent your dog’s coat from changing color. Nutritional balance, health conditions, side effects to medication, and sun bleaching can all be managed.

What causes a dog's hair to change color?

Hereditary. Acanthosis nigricans (primarily a genetic condition in Dachshunds that causes hair loss and pigment change) Color dilution alopecia (hair loss and breakage typically in dogs with a light coat color for the given breed)

Why does my dog's coat change color?

Symptoms & Signs. The skin and coat of a dog may sometimes change color, becoming lighter or darker. This may be a normal process or may be due to a serious disease. If the skin or coat has a color other than white, it is said to be pigmented. If the skin is a darker color than normal, it is said to be hyperpigmented;

How to treat pigmentation in dogs?

Most dogs experiencing pigment changes are managed at home with prescription medications, supplements or medicated shampoos, yet the precise course of treatment is dependent upon the underlying cause.

What is the name of the disorder that attacks the pigment cells in the eyes, hair coat and foot pads?

Follicular dysplasia (abnormal hair cell growth, causing changes in the hair shaft, pigment changes or hair loss) Uveodermatologic syndrome (in herited autoimmune disorder that attacks the pigment cells in the eyes, hair coat and foot pads)

What tests are needed to diagnose a dog's skin?

Such tests may include blood work, microscopic evaluation of skin samples (cytology) or skin biopsies. Back to top.

Why do dogs need spaying?

Surgical procedures may be necessary for some cancerous conditions. Spaying and neutering is often needed to manage hormonal causes of pigment changes in intact dogs.

What causes black hair on dogs?

Black hair follicular dysplasia (coat and skin changes affecting the black and dark brown hairs in dogs with two or three colors in the coat) Nasal depigmentation (Dudley nose or snow nose; pigment change of the nose from black to red-brown) Follicular dysplasia (abnormal hair cell growth, causing changes in the hair shaft, ...

Why does my dog's beard have dark spots?

If you had a beard and stuck your face into a bowl to drink or eat, odds are you'd end up with dark stains too. Artificial coloring in your pup's food can transfer to his hair as he eats, leaving him with a strained ring around the mouth. Minerals and other impurities in his drinking water can also leave stains behind, and encourage growth of the already-present bacteria and yeast. Switch to a food brand with as little artificial colors as possible and use filtered water to minimize staining.

What dog breeds have rusty brown stains?

White dog breeds, such as the Maltese and bichon frise, look brilliant when their coats are pristine. But that brilliance fades with the appearance of rusty brown stains. These dirty spots appear for a number of reasons, and can be eliminated with regular cleaning and a change in daily habits.

Why do dogs have stains on their legs?

Those unsightly stains growing under your pooch's eyes, mouth and on his legs are most likely evidence of a massive microscopic house party. Your pup's tears and saliva provide the optimum environment for bacteria and yeast growth. When his eyes water or he licks himself, he's wetting the hair, introducing more bacteria and giving existing microscopic nasties the opportunity to feed and multiply. The larger the collection of these tiny buggers, the darker and larger the coat stains.

How to get stains off a white dog?

Wipe your pup's prone-to-stain areas with a wet washcloth every single day to stop stains before they get a foothold. Bathe him with a shampoo specially formulated for white dogs, as this helps remove stubborn stains and return his coat to the gleaming white it's meant to be. Commercial products specifically for the removal of tear and face stains are sold in retail stores, but read all instructions to the letter and be very careful when you use these around your pup's face.

How to get rid of bacteria in dogs?

Bacteria growth means more staining. Use stainless steel, glass or ceramic bowls to eliminate this bacterial barrage, and wash them regularly with hot soapy water.

Why does my dog's water leave a stain?

Minerals and other impurities in his drinking water can also leave stains behind, and encourage growth of the already-present bacteria and yeast. Switch to a food brand with as little artificial colors as possible and use filtered water to minimize staining.

Can dogs have plastic bowls?

As if it weren't bad enough that what's in his bowl could cause this ugly staining, the type of bowl he noshes from could also have a hand in his dirty face. Plastic feeding and drinking bowls are common choices for dogs, but these can develop tiny cracks over time.

Why is my dog's fur rusty?

A dog’s fur may turn a rust color as a result of a yeast infection or porphyrin production in their tears, saliva, urine, and/or feces . When in contact with a dog’s coat, yeast and porphyrin can both result in staining fur a dark red or brown color.

How to get rid of dog fur stains?

But keep in mind, these are all long-term solutions. For a quick resolution, try these steps: Thorough Bathing – Give your dog a thorough bath to clean their body and hopefully remove the fur staining. Remember to use hypoallergenic shampoos that are free of perfumes, sulfates, parabens, and other harsh chemicals.

Why does my dog have rust on his back?

If rust fur staining is appearing specifically on your dog’s back, here are a few potential causes: Medical Issues – Medical issues such as periodontal disease and dental problems can result in excess saliva production.

What to do if my dog has a stain on his fur?

Medical Treatments – Seeking medical treatment from your veterinarian solves both your dog’s condition and their fur staining. It’s important to not assume your dog’s fur staining is simply superficial, so getting it checked out will prevent any longer-term damage from occurring.

How to get rust off a dog's back?

For stubborn stains, make a paste using baking soda and water. Apply the paste, let it dry, and then wipe it off using a damp cloth. One of the most common areas for rust staining is under your dog’s eyes.

How to help a dog with allergies?

Allergens and Triggers – Avoiding allergens and/ or medicating your dog should help reduce or resolve their symptoms. Knowing your dog can be one of the best ways to identify future problems, keep a record of past issues, this will allow you to refer back to the problem and may help to find a solution quicker.

What is the best way to get rid of fur staining in dogs?

Quality Diet – A high-quality or prescription diet is the best solution to food allergies and should resolve the fur staining. This of course is a longer more difficult route to take, speaking to your vet or animal nutritionist can help to identify the best food for your dog.

The Process of Maturing

The Aging Process

  • Humans are not the only ones to age, turns out, dogs age too, and when they do, their fur undergoes changes just as it happens in humans. Dogs may not get white hair to the extent of humans, but it's normal to see some graying of the muzzle. As a dog matures, it's therefore quite common for his darkly pigmented coat to attain a lighter color. This loss of pigmentation in the …
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Some Minor Causes

  • Just as people's' hairs tend to lighten during the summer months, Rover's hairs may bleach slightly too, explains veterinarian Dr. Christian. Shaving a dog's coat may also cause the hair to become softer and prone to color changes. Generally lighter hues are seen after repeated haircuts. The fact that clipping affects texture, and color of a dog's new coat coming through, has triggered so…
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Hormones Out of Whack

  • Changes in a dog's coat color and texture can be an indication of hormonal problems. Hypothyroidism, a medical condition where the dog's thyroid levels are low, causes several coat changes and a change in pigmentation may be one of them. Along with a pigmentation changes, hypothyroidism can cause hair loss, brittle hair, secondary skin infections a...
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A Matter of Stains

  • Sometimes dog owners report that the fur on their dog's face is of a different color. This is mostly seen in dogs with candid white coats that attain pink, red or brown colors around the eyes and mouth area. In this case, the colors are really stains that come from the dog's saliva and tears. The cause of these stains on a dog's fur are natural chemicals called porphyrins which are found…
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Loss of Pigmentation

  • "My dog's coat color has changed drastically and some areas on the face have turned white, what can this be?" Such drastic coat changes may be triggered by a medical condition known as vitiligo. In this case, the loss of pigment mostly affects the dog's nose, lips, and face and it can be temporary or even permanent. What happens is that, melanocytes, the cells responsible for givin…
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Now That You Know...

  • As seen there are many possible reasons why dogs' fur change color. If you are in doubt or if your dog is showing signs of of problems such as excessive itching, hair loss or presence of lesions, consult with your vet. A referral to a board-certified veterinary dermatologist may turn insightful for complex cases.
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