Why Does My Dog Have Bad Tear Stains?
📝 Summary
Tear stains come from irritation, ingrown lashes, dirty ears, salty food, or breed genetics (Pekingese/Chihuahua/Pug). Clean gently, fix diet, and see a vet for disease or severe cases.
1 How Tear Stains Form and Their Causes
Tears are mostly water plus salts and protein; after evaporation the residue becomes dark-brown stains. Causes include: poor eye cleaning—dust, hair, or smoke irritates the eye and triggers tearing that, if not cleared, can inflame it; check and wipe the eyes daily (wash your hands first) and trim hair around them. Ingrown eyelashes from inward-rolling eyelids rub the cornea and can cause ulcers, conjunctivitis, and keratitis—pluck the offending lashes and apply a pet eye ointment. Unclean ears (excess hair or wax breeding mites/bacteria) make the dog scratch and stimulate the tear glands; get ears checked and cleaned regularly. Oily or salty food worsens stains and shedding—stop high-salt kibble, switch to natural low-salt food, and give more plain water.
2 Breed and Disease Factors
Some breeds (Pekingese, Chihuahua, Pug—big, protruding eyes) have genetic over-tearing where the large eye presses the tear duct and it fails to develop; severe cases may need a small surgery to open the duct. Disease (tear-gland inflammation or blocked duct) causes excess tearing and needs a vet’s diagnosis and treatment. In daily life, combine careful care with a bland diet, and a few eye massages a week can ease stains.
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