Dog Eye Discharge: Causes, Cleaning, and When to See the Vet

Gentle care and close monitoring help maintain clear vision and comfort for your pup.

By Medha deb
Created on

Dog eye gunk is a common occurrence for pet owners. Sometimes it’s harmless, but certain changes in eye discharge can signal health issues. Understanding what’s normal, how to care for your dog’s eyes, and when to seek help is key to your companion’s wellbeing.

Understanding Dog Eye Discharge

The medically accurate term for dog eye gunk is discharge. While it can look unsightly, discharge is sometimes simply a result of the eye flushing out dust, debris, or excess tears. Most dogs will have some eye gunk, especially after sleeping, but variations in color, texture, and amount could indicate other problems.

  • Clear or whitish-grey, watery discharge is generally normal.
  • Crusty gunk is common after sleep or exposure to dust.
  • Mucus-like, pus-like, or colored discharge can be a sign something is wrong.

Recognizing the difference between normal and abnormal discharge is crucial for acting early if there’s an underlying problem.

What Does Normal Dog Eye Discharge Look Like?

Normal discharge serves a purpose—your dog’s tears carry away irritants and keep the eye moist. Typical discharge appears:

  • Clear to whitish-grey
  • Thin, watery consistency
  • A small, crusty buildup, especially after sleep
  • Might include tiny particles of dust or debris

As long as your dog’s eyes aren’t red, swollen, or causing discomfort, this kind of eye gunk is usually harmless.

When Is Eye Discharge a Concern?

If the discharge changes in any of the following ways, it might signal a need to contact your vet:

  • Becomes thick, yellow, green, or pus-like
  • Accompanies redness, swelling, squinting, or pawing at the eyes
  • Is continuous or excessive
  • Forms a hard crust that is difficult to clean

Common Causes of Dog Eye Discharge

Healthy eyes can still collect gunk, but persistent or abnormal discharge may arise from several sources:

CauseDescriptionTypical Discharge
Normal TearingTears flush out dust overnight or after playClear, watery
AllergiesIrritation from pollen, dust, or environmentWatery, sometimes thin white
Blocked Tear DuctsTears back up and spill overClear to slightly cloudy
Eye InfectionsBacterial, viral, or fungal agentsYellow, green, pus-like
Injury / Foreign BodyScratches or irritants in the eyeWatery to mucusy, possible blood
Dry Eye (Keratoconjunctivitis Sicca)Deficiency in tear productionThick, mucoid or yellow
Breed-Related (e.g. Shih Tzus, Bulldogs)Short-nosed or protruding eyeballs lead to more debrisVisible gunk, often daily

If your dog’s gunk is persistent, colored, or accompanied by discomfort, see a vet. The following sections offer guidance about when to take action at home and when to seek help.

How to Clean Dog Eye Gunk Safely

Routine care is important for preventing irritation or infection from harmless eye discharge. Here’s how to do it safely and effectively:

Step-by-Step Cleaning Guide:

  1. Wash and dry your hands before and after cleaning.
  2. Use a clean, soft, damp cloth or cotton pad soaked in warm water.
  3. Gently wipe away gunk from the corners of the eyes—never use force.
  4. Wipe outward, away from the eye to avoid transferring bacteria.
  5. If gunk is hard/crusty, soak the area with the damp cloth for a few seconds before wiping—do not pull.

For dogs with chronic or heavy discharge, consider using a specialized pet eyewash solution:

  • Vetericyn Plus Eye Wash for Pets: Lubricates, flushes out irritants, and soothes the eye.
  • Always select products formulated for canines—never use human eye drops unless recommended by your vet.

Important Dos and Don’ts

  • Do be gentle. The eye and surrounding tissues are sensitive.
  • Do use a new cotton pad or area of the towel for each eye to avoid cross-contamination.
  • Don’t use your bare fingers—they may introduce bacteria or cause injury.
  • Don’t use any sharp or abrasive materials.
  • Don’t try to treat severe eye problems at home—seek veterinary care for colored, thick, or persistent discharge.

When to Call the Vet: Warning Signs

Certain symptoms mean you should call your veterinarian right away. Watch for:

  • Redness: Pink or red eye, or red around the eyelids
  • Swelling: Puffy eyelids or face
  • Squinting or excessive blinking
  • Pawing or rubbing at the eyes: Signs of pain or itchiness
  • Discharge that is yellow, green, or thick
  • Sudden changes: New onset or rapid worsening of discharge
  • Loss of vision or problems finding food/toys

These could indicate infection (bacterial, viral, or fungal), an eye injury, allergies, or dry eye disease.

Some breeds—those with prominent or bulging eyes, such as Bulldogs, Pugs, and Shih Tzus—are especially prone to eye issues and should be monitored closely.

Top 5 Dog Eye Care Tips

  • Keep your dog’s eyes clean. Wipe away normal gunk regularly with a soft wet cloth.
  • Use canine eye wash solution for routine cleaning and allergy relief.
  • Trim hair around eyes to prevent irritation, but only with caution (ask your groomer or vet).
  • Protect from irritants like dust, pollen, or wind by limiting exposure.
  • Avoid using human eye medication on pets (unless directed by a vet).

Some over-the-counter pet eye rinses help lubricate and flush the eyes, but serious symptoms should always be evaluated by a professional.

Frequently Asked Questions About Dog Eye Discharge

Why does my dog always have gunk in their eyes?

Some dogs naturally produce more tears or live in environments with dust or allergens. Breed, age, and exposure can increase normal discharge. If the gunk is clear or white and doesn’t cause discomfort, this is usually normal.

Is dog eye discharge contagious to humans or other pets?

Most causes of dog eye discharge (like allergies or debris) are not contagious. However, bacterial or viral infections causing discharge can rarely be passed between pets. Practice good hygiene when cleaning and keep infected pets separate if the cause is infectious—check with your vet if you’re unsure.

How do I know if my dog’s eye discharge is an infection?

  • Yellow, green, or thick pus-like gunk is the most common sign of a bacterial infection.
  • Other signs include redness, swelling, squinting, and pawing at the eye.
  • If normal cleaning doesn’t improve the discharge or other symptoms are present, see your veterinarian promptly.

What should I do if my dog resists cleaning?

Go slowly and gently, offering treats and praise. Use a soft, damp cloth. If your dog is fearful or the eye is very painful, don’t continue—contact your vet for help.

Can I use human eye drops on my pet?

No. Only use medications or eye drops prescribed for your dog by a veterinarian. Some human medications can be harmful to pets.

Key Takeaways: Dog Eye Discharge

  • Most dogs will get some eye gunk occasionally, especially after sleep or play.
  • Normal discharge is clear to whitish-grey and not bothersome for your pet.
  • Colored, thick, or persistent discharge—especially with other symptoms—should be checked by your veterinarian promptly.
  • Clean your dog’s eyes gently with a damp cloth and consider a pet-safe eyewash as needed.
  • Never use your fingers or human medications on your dog’s eyes.
  • Maintain regular eye checks as part of your pet’s overall health routine.

Caring for your dog’s eyes protects their vision and comfort. If in doubt, always consult a veterinary professional.

Medha Deb is an editor with a master's degree in Applied Linguistics from the University of Hyderabad. She believes that her qualification has helped her develop a deep understanding of language and its application in various contexts.

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