Why Does My Dog Have Lots of Eye Discharge and Low Energy?

1 Causes

Plain eye irritation or conjunctivitis from ‘heat’ or bacteria causes discharge but rarely obvious lethargy, so when both appear together think of these two causes:

Gastroenteritis-type cold: red conjunctiva, runny nose, elevated temperature, depression, reduced appetite, and possible vomiting or diarrhea. Severe cases bring persistent vomiting or bloody stool with a distinctly foul smell.

Canine distemper: the early signs resemble a common cold — coughing, runny nose — then later a biphasic fever with red, swollen, tearing eyes and discharge that grows thicker and more abundant.

2 What to Do

Because several conditions look alike, take the dog to a clinic for a confirmed diagnosis, then treat the cause.

For a gastroenteritis-type cold, give a cold medicine (such as a Shuanghuanglian-style tablet or doxycycline) and, for the eye inflammation, an antibacterial drop like neomycin sulfate. Offer warm water, keep the diet light and digestible, and keep the dog warm — no cold drafts or cold floors.

For distemper, the clinic provides antiviral and symptomatic care — antibiotics, eye drops, and cough medicine as needed. If the dog refuses all food, intravenous fluids prevent dehydration.

These are just two common causes and don’t cover everything. Consult a vet before choosing any medication, and never overuse antibiotics, which can harm the dog.