Bulldogs Get Bald Spots Due to Lack of Sunlight!!?

A Bulldog With Focal Alopecia November 1999 Veterinary Medicine: "Seasonal affective disorder can be culprit for canine hair loss

Coming off of a long, dark winter as we are in the Midwest, we're confronted with a unique disease seen in certain breeds of dogs. Light responsive alopecia or seasonal flank alopecia is most often seen at this time of the year. It is not well understood but is thought to be from lack of sunlight
exposure to the pineal gland. The pineal gland is located at the base of the brain and is the gland responsible for telling bears to hibernate and perhaps telling us to crawl into bed early during these long winters, eat fatty foods, and in general, not have much energy."

--see part two below & read the entire article by clicking on the title
E.S.