The cause of canine diabetes is unknown, but it develops when a dog's body is unable to produce or metabolize the hormone insulin, leading to high blood sugar levels, explains WebMD. Blindness is a possible complication of diabetes that usually occurs when cataracts are left untreated. A cataract is an opaque section of the lens that causes blurred vision. The cataract may thicken over time or detach and float in the eye, both of which may precede blindness.Continue Reading
Beta cells in the pancreas produces insulin that helps cells absorb glucose from the bloodstream, supplying the body with energy, explains The Bark. A diabetic dog with an insulin deficiency lacks adequate beta cells, so the body's glucose level surpasses the reduced insulin supply. If the dog is insulin-resistant, the body has enough of the hormone, but is unable to use it correctly. Age, weight, diet, mixed breed and gender are risk factors for canine diabetes.
Symptoms of diabetes include increased urination, excessive thirst, changes in appetite, weight loss and lethargy, according to WebMD. The dog may develop cataracts, chronic skin infections or urinary tract infections. Cataracts typically make a dog's eye appear cloudy or bluish-gray. Owners should periodically examine their dogs' eyes and consult a veterinarian when pets show signs of poor vision, as treating the diabetes may improve vision impairment.Learn more about Veterinary Health