Wrong, Wrong, Wrong!

You are NEVER supposed to shave a siberian or any other dog that has a thick undercoat. Their coats actually help insulate them from the heat, as well as keeping them warm in the cold. Do your research folks. I'd be scared of a vet who doesn't know this. The best thing you can do for your dogs are to brush them regularly (stimulates follicles and gets rid of dead hair) and if they MUST be kept outside in the heat, make sure they have shade and water at all times. And, yes, a dog's skin is very easily burned by the sun (along with their noses).