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Blinking and squinting
Blinking and squinting
GOODLUZ/SHUTTERSTOCK

Eye injuries can cause varying levels of pain and discomfort for your dog. If you notice him blinking, squinting, tearing up, or pawing at his eye, he may have a corneal abrasion, eyelid issues (called entropion), glaucoma, conjunctivitis, or more obscure types of eye diseases. Talk to your veterinarian.