The American Kennel Club accepted registration of the new breed in 1926, two years after Miniature Schnauzers were introduced to the United States. For this reason, Schnauzers are considered a hypoallergenic breed. They are characterized by a rectangular head with bushy beard, mustache, and eyebrows; teeth that meet in a 'scissor bite'; oval and dark colored eyes; and v-shaped, natural forward-folding ears (when cropped, the ears point straight upward and come to a sharp point). Their tails are naturally thin and short, and may be docked (where permitted). They will also have very straight, rigid front legs, and feet that are short and round (so-called 'cat feet') with thick, black pads.