Yorkshire Terriers began as working ratters in the mills and mines of nineteenth-century northern England, and the breed's tiny frame, usually around seven pounds, hides a big terrier attitude. The silky steel-blue and tan coat grows like human hair, so it sheds little but needs steady care.
In St. Louis, that care means regular brushing, a professional groom every six to eight weeks, and daily tooth brushing, since dental disease is common in the breed. Yorkies are confident, curious and quick to sound the alarm, which matters on close-set brick blocks. They're fragile around rough play and bigger dogs, so plan on a harness, steady supervision and patient house training. Every Yorkie differs, so judge the dog in front of you rather than the breed's reputation.