A little dry dark crust can be normal, and flat-faced breeds tear more due to duct anatomy; gentle wiping with a damp pad handles daily maintenance.
Increasing watery tears often reflect irritation, allergy, or corneal pain, while white mucus leans toward dry eye or chronic inflammation needing testing.
Yellow-green pus, swollen lids, and constant squinting or pawing suggest infection or corneal ulcers, where delay can cost vision, so see a vet promptly.
Clean only with saline or vet-approved wash, wiping outward from the inner corner; never apply steroid eye drops on your own, as they worsen ulcers.
