Why do dogs get eye boogers?

Mucus, yellow-green pus, or a watery eye discharge can all be signs of conjunctivitis, an inflammation of the lining of your dog's eye. There's a wide range of causes for conjunctivitis, from allergies, injury, birth defects, and tear duct problems, to foreign matter, dry eye, distemper, or even tumors. read more

Once the eyes are closed and shut at night, dirt is not continually washed out by tears. Dog eye boogers tend to be more apparent in the morning as the gunk accumulates over night while the eyes are shut and not blinking. read more

Eye mucus in dogs is normal and can be caused by a number of things, from viruses to allergies. However, excessive discharge (especially when it’s yellow or yellow-green) could be a sign of an infection, glaucoma or other eye problems — even a brain or nerve injury. read more