With their bushy eyebrows and moustaches, Schnauzers look like wise old men. This distinctive look does take a bit of a time and, even with clipped coats, they need to be brushed daily. Their furry eyebrows also need to be trimmed and their whiskers need to be cleaned. Appropriately, given their appearance, Schnauzers are very intelligent dogs. When trained effectively, using training aids and treats for positive reinforcement, Schnauzers can make excellent guard dogs.  Celebrity owner: Usher.