Dogs get eye boogers, also known as eye discharge, for various reasons. Typically, these boogers are made up of dried tears, oil, mucus, dead cells, and dust that accumulate in the corners of the eyes. Tear production in dogs serves to keep the eyes healthy by providing nourishment, oxygen, and hydration, as well as clearing debris. Normally, tears drain through tear ducts, but sometimes a small amount of discharge or crust can build up, which is usually normal and easy to clean, especially after waking up. However, eye boogers in dogs can also be caused by several other factors, including:
- Allergies: Environmental allergens like pollen, dust, or mold can irritate a dog’s eyes and increase tear production.
- Breed-specific traits: Dogs with flat faces and bulging eyes (e.g., Bulldogs, Pugs) often have more eye discharge due to their eye and eyelid structure.
- Infections: Bacterial or viral infections such as conjunctivitis (pink eye) can cause red, inflamed eyes with noticeable discharge.
- Blocked tear ducts: Sometimes tear ducts get blocked, causing tears to build up and discharge to appear.
- Foreign bodies and injuries: Dirt, grass, or eye injuries can irritate the eye leading to discharge.
- Dry eye syndrome: A condition where the eyes don’t produce enough tears, paradoxically causing sticky discharge.
- Age-related changes: Older dogs may experience increased eye discharge due to eye health deterioration or cataracts.
A small amount of light brown crust or discharge is typically normal if the eyes look clear and the dog shows no signs of discomfort. But if the discharge increases, becomes thick, yellow/green, or is accompanied by redness, swelling, squinting, or other signs of eye pain, veterinary attention is warranted to rule out infections or serious eye conditions.