Yorkshire Terriers are intelligent, spirited and alert. Patient training and early socialization will reduce the Yorkshire terrier's tendencies towards timidity and nipping. One of the world's smallest dogs, this affectionate breed is always willing to please. The Yorkshire terrier is a "big dog in a small dog body," ready for adventure. Affectionate with its owners, the Yorkshire terrier can be timid around strangers and dislikes roughhousing.