This post from Dogs Naturally Magazine discusses why you will NOT be making your long-haired dog more comfortable by shaving them in the summer. Dogs with double-coats (Alaskan Malamutes, Australian Shepherds, Bernese Mountain Dogs, Golden Retrievers, Newfoundlands, Siberian Huskies, and more) need their coat to protect them from the sun and to insulate them from the heat. Shaving a dog with a double-coat can cause permanent damage. For more information on this topic read the entire article at http://www.dogsnaturallymagazine.com/why-you-shouldnt-shave-your-dog-in-summer/