By the Dog Health Insider Editorial Team · Updated June 5, 2026
A little eye gunk is normal, but a sudden increase can be confusing. Here is how to tell harmless sleep from a problem — and how to keep the eye area clean.
What is normal vs not
Clear or slightly grey discharge that wipes away easily is usually fine. Thick, colored, smelly, or one-eyed discharge — or squinting — is not.
Common sudden causes
Allergens like pollen and dust, wind or dry air, a stray eyelash or irritant, or early infection can all increase discharge.
Gently cleanse around the eyes and help reduce tear-stain buildup.
How to clean the eye area
Wipe gently from the inner corner outward with a dog-safe rinse or damp pad; never touch the eyeball. A daily rinse helps keep the area clear and reduce tear staining.
When to see your vet
Green or yellow discharge, redness, swelling, cloudiness, or signs of pain are urgent — eye problems can worsen quickly.
Frequently asked questions
Are dog eye boogers normal?
A small amount is normal; a sudden increase or colored discharge warrants attention.
How do I clean them safely?
Wipe from the inner corner outward with a dog-safe rinse; avoid the eyeball.
When is it an emergency?
Pain, squinting, cloudiness, or green discharge need a prompt vet visit.
Read next: Dog Eye Infections & Tear Stains: the complete guide
⚕ Disclaimer: For educational purposes only; not a substitute for professional veterinary advice. Supplements are not medicines and are not intended to diagnose, treat, cure, or prevent any disease. Always consult your veterinarian before starting any new supplement.
Sources
- Merck Veterinary Manual. Eye Disorders of Dogs.
- American Kennel Club. Dog Eye Discharge.
- American College of Veterinary Ophthalmologists.