It’s a common sight among senior dogs—dark, reddish-brown streaks forming beneath their eyes, often accompanied by moisture or mild crusting. These tear stains can make even the happiest pup look tired or unwell, and for many owners, they raise immediate concerns about hygiene or underlying illness.
While tear stains are often cosmetic, they can also signal changes in your dog’s health, especially as they age.
Older dogs are more prone to eye irritation, excessive tearing, and tear duct issues that can lead to staining.
We help you understand exactly why your old dog develops tear stains, what they mean, and how to manage them naturally and effectively for your dog’s comfort and confidence.
What Are Tear Stains?
Tear stains are discolored streaks that appear under a dog’s eyes, typically along the fur surrounding the tear ducts. The stains often range from rusty red to brown, depending on the dog’s coat color and the chemical composition of the tears.
The discoloration occurs when porphyrins—iron-containing molecules found in tears, saliva, and urine—oxidize upon exposure to air. Porphyrins are naturally excreted through tears, but when the eyes produce excess fluid, these compounds accumulate on the fur, leaving noticeable stains.
Tear stains themselves aren’t always harmful, but chronic tearing may indicate irritation, infection, or health issues that require veterinary attention—especially in older dogs.
Why Tear Stains Are More Common in Older Dogs
Senior dogs are more susceptible to tear stains for several reasons. With age, the muscles around their eyes weaken, tear ducts can narrow or clog, and their immune systems become less effective at fighting mild infections.
In addition, chronic conditions like allergies, dental disease, or eye disorders are more common in older pets, all of which can increase tear production.
Coat texture also plays a role—long-haired or light-colored breeds, such as Maltese, Poodles, Shih Tzus, and Bichons, show staining more prominently.
Over time, if the fur beneath the eyes remains damp, yeast or bacterial buildup can make the stains darker and smell unpleasant.
Old Dog Tear Stains: Signs
If your old dog has tear stains, you may notice:
- Reddish-brown or dark streaks under the eyes
- Damp or matted fur beneath the eyes
- Mild eye discharge
- Slight odor around the eye area
- Crusty buildup in the corners of the eyes
- Occasional squinting or blinking
- Irritation or redness in some cases
Old Dog Tear Stains: Common Causes
Excessive Tearing (Epiphora)
The most direct cause of tear stains is epiphora, the medical term for excessive tearing. Tears normally drain through ducts that run from the eyes to the nose. In older dogs, these ducts can become blocked due to age-related tissue changes, scarring, or inflammation.
When drainage is obstructed, tears overflow from the eyes and run down the face, soaking the fur.
The constant moisture encourages bacterial growth and leaves behind porphyrins, resulting in the rusty-colored streaks you see.
Epiphora can stem from various sources, including irritation from foreign particles, mild infections, or even changes in tear chemistry that come with aging.
Read more: Old Dog Gunky Eyes (What sticky discharge means)
Eye Infections
Bacterial or viral eye infections are another common cause of tear stains in older dogs. The eyes may appear red, swollen, or produce thick, discolored discharge. Infections can occur after injury, exposure to irritants, or due to weakened immunity in senior pets.
Infections increase tear production and introduce proteins and cellular debris into the tears, making them darker and stickier.
This combination not only stains fur but can also lead to matting and discomfort if not cleaned promptly.
If your dog’s tear stains are accompanied by yellow or green discharge, squinting, or pawing at the face, it’s likely an infection requiring veterinary treatment.
Read more: Old Dog Dull Eyes (Changes you shouldn’t ignore)
Blocked or Narrow Tear Ducts
With age, tear ducts may become partially blocked due to inflammation, debris, or scar tissue from past infections. When tears cannot drain properly into the nasal cavity, they overflow onto the fur, leading to staining.
This condition is particularly common in small and flat-faced breeds (like Pugs and Shih Tzus) where the ducts are naturally shorter or narrower.
Older dogs may also develop narrowing due to chronic irritation or dental problems affecting the sinus region.
Veterinarians can flush the tear ducts to clear blockages and restore normal drainage. Regular cleaning at home also helps prevent further obstruction.
Allergies
Allergies are an underestimated cause of tear stains, especially in older dogs whose immune systems become more reactive with age. Dust, pollen, smoke, cleaning products, or even certain foods can cause watery eyes and excessive tearing.
When allergens irritate the eyes, the body increases tear production as a protective response. However, chronic exposure leads to persistent moisture and staining.
Additionally, allergic reactions can inflame the skin around the eyes, making the area more sensitive and prone to infection.
Identifying and reducing environmental triggers—such as using hypoallergenic bedding and air purifiers—can make a significant difference in minimizing stains.
Dental Disease or Oral Infections
It might surprise some pet owners, but dental problems can also cause tear stains.
The roots of the upper teeth are located close to the tear ducts. In senior dogs, infections or abscesses in these teeth can place pressure on the ducts, disrupting tear flow.
When drainage is blocked, tears overflow, creating visible stains. Dogs with oral pain may also drool more or lick their faces, spreading porphyrins and darkening the stains.
Treating underlying dental issues not only improves oral health but also reduces tear-related staining.
Eye Shape and Structural Changes
As dogs age, subtle structural changes occur around their eyes. The eyelids may droop (a condition called ectropion) or turn inward (entropion), both of which interfere with normal tear distribution.
In entropion, the eyelashes rub against the cornea, causing irritation and excessive tearing. In ectropion, the lower eyelid sags, preventing proper tear containment and drainage.
Both conditions can lead to staining and should be evaluated by a veterinarian, as surgical correction may be needed in severe cases.
Yeast and Bacterial Overgrowth
Constantly moist fur beneath the eyes provides an ideal environment for yeast and bacteria.
The reddish-brown discoloration often deepens when yeast infections develop, and a mild odor may accompany the stains.
Older dogs, particularly those with compromised immune systems, are more prone to these secondary infections.
Regular cleaning and keeping the eye area dry can help control microbial growth and prevent recurring stains.
Old Dog Tear Stains: What to Do
If your old dog has tear stains, start by gently cleaning the area daily with a soft, damp cloth. Keeping the fur clean and dry helps prevent buildup and irritation.
Trim the hair around the eyes if it’s long, as this can reduce moisture retention and staining.
Ensure your dog’s environment is free from irritants such as dust or smoke that could worsen tearing.
Provide a balanced diet and ensure your dog stays hydrated, as overall health supports eye function.
Monitor the staining and watch for changes in color, amount of discharge, or signs of irritation.
How to Tell If Tear Stains Are a Sign of Something Serious
While tear stains are often cosmetic, certain signs suggest a more serious issue:
Thick, colored discharge (yellow or green)
- Sudden increase in tearing
Redness or swelling around the eyes
Persistent scratching or rubbing
Cloudy or dull-looking eyes
Foul odor from the eyes or face
- Changes in vision or behavior
If your senior dog shows any of these symptoms, schedule a veterinary visit immediately.
These symptoms may indicate infection, injury, or a more serious eye condition requiring immediate medical attention.
Early diagnosis and treatment can prevent complications like chronic infection or vision loss.
Old Dog Tear Stains: Treatment
Veterinary treatment for tear stains in an old dog depends on the cause. Your veterinarian may examine the eyes and tear ducts to identify blockages or infections.
If an infection is present, medicated eye drops or ointments may be prescribed.
Blocked tear ducts may require flushing or other procedures to restore normal drainage.
In cases related to allergies or irritation, managing the underlying trigger can help reduce tearing.
Preventing Tear Stains in Older Dogs
The best prevention strategy combines hygiene, diet, and veterinary care. Clean your dog’s face daily, keep the eye area dry, and schedule regular vet checkups.
Feed high-quality food with no artificial dyes or fillers, as these can exacerbate tear staining in sensitive dogs. Provide filtered or purified water to minimize mineral buildup that contributes to discoloration.
Finally, address health problems—like allergies or dental disease—promptly. A proactive approach keeps your senior dog’s eyes bright, comfortable, and free from stains.
Frequently Asked Questions
Are tear stains dangerous for dogs?
Tear stains themselves aren’t harmful, but the underlying causes—like infection or blocked ducts—can cause discomfort or complications if untreated.
Can I use baby wipes to clean tear stains?
No. Baby wipes often contain alcohol or fragrances that can irritate your dog’s eyes. Use vet-approved, pet-safe wipes instead.
How long does it take to remove tear stains?
Once the cause is treated, stains may take several weeks to fade. Consistent cleaning and a healthy diet help speed up results.
Do certain dog breeds get tear stains more often?
Yes. Breeds with flat faces (Pugs, Shih Tzus) or white coats (Maltese, Bichons) are more prone to visible staining.
Can tear stains be a sign of pain?
They can be. If your dog is squinting, rubbing its eyes, or avoiding light, it may be experiencing discomfort that needs veterinary attention.
Are there natural remedies for tear stains?
Yes. Filtered water, a clean diet, and gentle natural cleansers like diluted chamomile tea can help manage mild staining. Always consult your vet before trying home treatments.
Key Takeaway
Tear stains in an old dog are often harmless but can sometimes signal underlying eye or health issues.
By keeping the area clean, monitoring for changes, and seeking veterinary care when needed, you can help maintain your dog’s eye health and comfort.
If something seems unusual or persistent, it’s always best to have your vet take a closer look.