You do not need to shave your Shiba. While they do shed it is usually fairly quickly. take him to the groomers and they can give him a warm bath and blow dry the oat and brush it out. Once the dead coat is out your Shiba will be done shedding for a while. The undercoat usually sheds out first and sometimes a second bath a week or two later is needed as the guard hairs come out. I also use a metal comb to help get the loose hair out during this time.