What is the cause of red blood in your dog’s eyes?

Eye prolapse: Genetics, head trauma, dog bites, fractures of the bone around the eye socket for various reasons can cause eye prolapse and lead to this condition. Dry Eye: Chronic tear deficiency, resulting in dry and inflamed corneas and conjunctivae can also cause red blood. Congenital disorders: Congenital eyelids and inverted eyelashes can cause bloodshot eyes in dogs. Foreign bodies in the eyes: Accidental ingress of sand, hair or other foreign bodies into the dog’s eyes can cause eye irritation and lead to red eyes. Inflammation of the eyes: endocrine disorders or bacterial or viral infections can cause inflammation of the dog’s eyes, resulting in redness and even keratitis caused by infection.