I would be careful when grooming your dog especially when clipping a dogs hair. people say you can clip it any length you want and I have seen it so short that you see skin. Clipping a dogs hair especially on long hair dogs does help to make the dog more comfortable but it is also a protective layer for the dog. If you clip it to short the dog is susceptible to the suns UV rays and can burn just like humans. So if you have an outdoor dog or are apt to take your dog out into the sun for the day be conscious of how short you clip the fur.