Tear Stains, Pink Feet, and the Science Behind the Rusty Fur

Tear stains are one of those grooming topics that can make dog parents feel like they are constantly cleaning the same little face over and over again.

You wipe the eyes. They look better for five minutes. Then the reddish-brown streaks come back like they pay rent there.

For some dogs, tear staining is mild and barely noticeable. For others, especially light-colored dogs, it can look dramatic. You may see rusty streaks under the eyes, damp hair in the corners of the face, a sour smell near the muzzle, or even pinkish staining on the feet where the dog licks.

So what is actually happening?

Tear stains are usually caused by pigments called porphyrins. Porphyrins are natural, iron-containing molecules that leave the body through tears, saliva, urine, and other waste. When tears sit on the coat, especially on light-colored fur, those pigments are exposed to air and light. Over time, they oxidize and leave behind that familiar reddish-brown discoloration.

In simple terms, the stain is not “dirt.” It is pigment from the body sitting in moisture on the hair.

That is why tear staining tends to show up most clearly on white, cream, apricot, silver, and lighter-coated dogs. Dark-coated dogs can have the same tear overflow happening, but the staining is harder to see. The problem may not look as obvious, even if the moisture is still there.

The stain itself is often cosmetic. The moisture underneath is what deserves attention.

When the skin and hair under the eyes stay wet, that damp area can become irritating. Moisture can soften the skin, trap debris, create odor, and make it easier for yeast or bacteria to overgrow. This is why some dogs with heavy tear stains also develop a smell, crusting, redness, rubbing, or sore skin in the folds around the eyes.

Why Some Dogs Get Tear Stains and Others Do Not

Some dogs are simply built in a way that makes tear staining more likely.

Tears are supposed to drain through tiny openings near the inner corners of the eyes and travel through the nasolacrimal ducts, which drain toward the nose. That is part of why our noses run when our eyes water.

In dogs, that drainage system can be affected by face shape, eyelid structure, hair growth, tear duct size, inflammation, and genetics. If tears cannot drain well, they spill onto the face instead. Once those tears sit on the fur, staining begins.

Flat-faced breeds are especially prone to this because their facial structure can make drainage less efficient. Dogs like Shih Tzus, Pugs, Bulldogs, Pekingese, Lhasa Apsos, and similar breeds often have shallow eye sockets, prominent eyes, facial folds, and short noses. All of that can affect where tears go.

Small fluffy dogs are also common tear stain clients. Maltese, Poodles, Bichons, Havanese, Yorkies, and many doodle mixes can have staining because of coat color, hair around the eyes, facial structure, allergies, or a combination of factors.

Hair can make a big difference too. If hair around the eyes grows into the corners, rubs the surface of the eye, or wicks moisture down the muzzle, the face may stay wetter. Even a tiny piece of hair touching the eye can cause extra tearing. That does not always look dramatic from the outside, but the dog may blink more, rub their face, or have one eye that tears more than the other.

Some dogs also have blocked, narrow, crooked, or poorly formed tear ducts. If the drainage pathway is clogged or shaped in a way that does not work well, tears have fewer places to go besides over the face.

Then there are eyelid and eyelash issues. Conditions like entropion, where the eyelid rolls inward, can cause hair or lashes to rub against the eye. Extra or misdirected eyelashes can do the same thing. These are veterinary concerns because the eye itself may be irritated or injured.

This is why a dog with tear stains may need more than a grooming wipe. Grooming can help keep the area clean and dry, but it cannot diagnose whether the tearing is from face shape, allergies, a blocked duct, an eyelid problem, infection, injury, or another medical issue.

Why Tear Stains Can Get Worse On and Off

Tear staining is not always steady. A dog may look pretty good for months, then suddenly the stains come back darker. That up-and-down pattern is common because tearing can be affected by more than one thing at a time.

Seasonal allergies are a big one. Pollen, dust, mold, grass, and environmental irritation can make the eyes water more. Some dogs have flares at certain times of year. Others react to indoor allergens, household sprays, dusty bedding, or even changes in the weather.

Food sensitivities may also play a role for some dogs, especially if the dog is itchy, licking, getting ear infections, or having skin issues at the same time. Food is not the first and only answer for every tear stain, but if the whole dog is showing signs of inflammation, it is worth discussing with a veterinarian.

Ear infections can sometimes show up alongside increased tearing, face rubbing, or head shaking. The face, ears, and eyes are close neighbors. When one area is inflamed or uncomfortable, the dog may rub, lick, paw, or produce more moisture in nearby areas.

Puppies may also have temporary tear staining during teething. Their faces, mouths, and sinuses are changing, and some puppies go through a messy, damp-faced stage while their adult teeth are coming in. That does not mean every puppy tear stain is teething, but it is one reason staining may improve as a dog matures.

Grooming schedule can affect it too. If the hair around the eyes gets long, damp, and stuck together, staining may look worse. If the face is trimmed, cleaned, and dried regularly, it may look much lighter. The underlying reason for the tears may still be there, but the stain has less time to build.

Even water bowls and food bowls can contribute to facial irritation if they are not cleaned often. Scratched plastic bowls can harbor bacteria more easily than smooth stainless steel or glass. For dogs with sensitive faces, switching to a clean stainless steel bowl and washing it daily is a simple, low-risk step.

Tap water and diet are often blamed for tear stains online. Sometimes a diet change or filtered water seems to help a specific dog, especially if allergies, minerals, or skin inflammation are part of the picture. But tear staining is rarely solved by one magic switch. If a dog’s tear ducts, eyelids, face shape, or allergies are the main issue, changing the water bowl alone will not erase the problem.

Why the Feet Turn Pink Too

When parents ask about tear stains, they often ask about pink feet in the same breath.

The eyes are rusty. The paws are pink. The beard is stained. The dog smells a little like corn chips. What is going on?

The pink or rusty staining on feet usually comes from saliva. Porphyrins are not only in tears. They are also in saliva. When a dog licks their feet over and over, the saliva sits on the hair just like tears sit under the eyes. The pigment oxidizes, and the fur turns pink, red-brown, or rusty.

So the stain did not really spread from the eyes to the feet. The same type of pigment is showing up in a different place because the dog is licking.

The bigger question is why the dog is licking.

Some dogs lick their paws because of allergies. Some lick because of yeast or bacterial irritation. Some lick because their feet are wet after walks, irritated by grass, itchy between the toes, painful from nails or mats, or sensitive from something they stepped in. Some dogs lick from habit or anxiety, but physical discomfort should always be considered first.

Yeast loves warm, moist areas. Feet are a perfect little yeast apartment: toes, folds, damp hair, licking, chewing, and not a lot of airflow. When yeast overgrows, the paws may smell musty or “Frito-like.” The skin may look red, greasy, thickened, darkened, or irritated. Dogs may chew between the toes, lick the tops of the feet, or stain the hair pink from constant saliva.

A groomer can notice the staining, smell, redness, dampness, or licking pattern. A veterinarian is the one who can confirm whether yeast, bacteria, allergies, pain, or another skin issue is involved.

What Parents Can Do at Home

The most helpful home routine is simple: keep the area clean, dry, and monitored.

For the face, use a soft damp cloth, pet-safe eye wipe, or veterinarian-approved cleanser around the eyes. Wipe gently away from the eye, not toward it. Do not scrub the skin. Do not use harsh whitening products near the eyes. Do not put anything directly into the eye unless your veterinarian has told you to.

After cleaning, dry the area well. This part matters. If the fur stays damp, the moisture continues to feed the problem. A clean, dry face is usually more helpful than an aggressive cleaning routine.

For dogs with heavy staining, cleaning once a day may not be enough. Some dogs need a quick wipe and dry twice daily, especially if their eyes water constantly. This does not have to be dramatic. Think of it like wiping a toddler’s face after a snack. Gentle, boring, consistent care usually works better than scrubbing once a week.

Keep the hair around the eyes maintained. For some dogs, that means regular grooming appointments so the corners of the eyes, muzzle, and face folds stay cleaner. Parents should be very careful trimming near the eyes at home. The skin in that area moves, dogs blink suddenly, and scissors near eyes are not forgiving.

Wash food and water bowls daily. Stainless steel is usually a better choice than old scratched plastic. Clean bedding regularly, especially for dogs with seasonal allergies. If your dog comes in from outside and tends to flare during pollen season, gently wiping the face and feet after walks may help reduce what sits on the skin.

For pink feet, dry the paws after rain, baths, daycare, or walks through wet grass. Check between the toes for redness, mats, swelling, odor, or debris. If the dog is licking daily, chewing hard, staining the feet, or smelling yeasty, that is a vet conversation. Grooming can clean the hair, but chronic licking usually has a reason.

What Groomers Can Do

Groomers can be a huge help with tear staining, but the role is support, not diagnosis.

A groomer can carefully clean the face, trim excess hair around the eyes when safe, remove crusty buildup, dry the folds, and help the parent understand whether the staining looks like ordinary maintenance or something that has changed.

A groomer may also notice patterns the parent has gotten used to seeing. One eye is suddenly worse than the other. The dog is squinting. The skin under the eye is red. The hair smells sour. The feet are stained and damp. The ears are irritated. The beard is rusty from licking. Those details matter.

A good groomer can say, “I’m seeing more moisture than usual,” or “This eye looks more irritated today,” or “The feet have a yeasty smell and the skin between the toes looks red.” That gives the parent useful information to bring to the veterinarian.

Groomers can also help prevent moisture from getting trapped in the coat. On dogs with heavy face furnishings, keeping the muzzle and eye corners neat can make daily cleaning easier. On dogs with foot licking, keeping paw pads trimmed and feet clean may help reduce trapped moisture and debris.

What groomers cannot safely do is promise to cure tear stains, diagnose the reason, flush tear ducts, treat infections, or recommend medical products as if they are harmless cosmetics. The eye is delicate. The skin around it is delicate. The cause matters.

What Not to Do

Do not use peroxide, lemon juice, whitening shampoos, contact lens solution, essential oils, or human eye products near your dog’s eyes unless your veterinarian specifically approves it.

Do not scrub the skin raw trying to remove old stains. Once hair is stained, some of that color may remain until the hair grows out or is trimmed away. The goal is to reduce new staining and keep the skin healthy, not bleach the dog into a before-and-after photo overnight.

Be cautious with tear stain supplements, especially products that make big promises. Some older tear stain products used antibiotics to reduce staining from the inside. Antibiotics should not be used casually for a cosmetic problem. If a supplement, powder, or “miracle cure” claims to erase stains from inside the body, ask your veterinarian before using it.

Also be careful with social media advice. Tear staining is a popular topic online because the before-and-after photos are satisfying. But a product that lightens hair does not necessarily solve why the dog is tearing. A dog with an eyelash rubbing the eye, a blocked duct, allergies, or an infection needs the cause addressed, not just the stain lightened.

When to Call the Veterinarian

Make a veterinary appointment if tear staining is sudden, heavy, one-sided, painful-looking, or paired with other symptoms.

Watch for squinting, redness, pawing at the eye, swelling, cloudiness, yellow or green discharge, thick mucus, odor, sores under the eyes, facial rubbing, or a dog who suddenly does not want their face touched. Those signs can point to irritation, infection, injury, ulcers, glaucoma, eyelid problems, or other eye concerns that need veterinary care.

For the feet, call your vet if your dog is chewing or licking often, the feet smell musty, the skin is red or swollen, the hair is stained from saliva, the paw pads look irritated, or the licking keeps coming back after grooming.

A veterinarian may examine the eyes, check tear production, look for corneal scratches, evaluate eyelids and lashes, check for infection, or refer to a veterinary ophthalmologist if needed. For paws, they may check for yeast, bacteria, allergies, parasites, pain, or inflammation.

Can Tear Stains Be Fixed?

Sometimes they can be improved a lot. Sometimes they can be managed but not completely eliminated.

If the cause is long hair rubbing the eye, better face maintenance may help. If the cause is allergies, treating the allergies may reduce tearing and paw licking. If the cause is an infection, veterinary treatment may clear the discharge and irritation. If the cause is a blocked duct or eyelid issue, your veterinarian can talk through medical or surgical options.

If the cause is facial structure, the dog may always be more prone to tear overflow. In that case, the focus becomes comfort, cleanliness, dry skin, and realistic maintenance.

The best routine is usually not dramatic. Clean gently. Dry thoroughly. Keep hair from trapping moisture. Wash bowls. Watch for changes. Get veterinary help when the eyes or skin look irritated. Work with a groomer who pays attention to the whole dog, not just the haircut.

Tear stains can be frustrating, especially when you are doing the wiping and the little rusty streaks keep returning. But once you understand the science behind the color, the routine starts to make more sense.

It is not about chasing perfection. It is about noticing moisture, protecting the skin, keeping the face and feet comfortable, and knowing when a stain is just a stain—and when it is your dog’s body asking for a closer look.