Dogs that are sensitive to being touched; dont like the pressure of the clipper; the noise of a dremel, etc.; can be almost impossible to nail trim. In fact, some owners have to resort to taking their dog to the vet to be sedated in order to keep their nails down. It is vital that your dogs nails be kept short. It can affect the way they walk, including their entire skeletal structure, not to mention the pain and possible infections of an overgrown or in-grown nail.