Many owners who brush their dogs regularly may feel the thick layer of matting under the layer of brushed fur and mistake this for the skin. Your groomer must be able to get a comb all the way down to the skin and through the coat. When the fur is pelted to the skin, it needs to be removed. If you are unable to get a comb through the hair to the skin, chances are a groomer may not be able to either. If your dog has severe matting, this is not something that can be brushed out. Trying to do so would only cause the dog severe discomfort. The matting must be shaved out.