The West Highland White Terrier, commonly known as the Westie or Westy, is a Scottish breed of dog with a distinctive white coat. The modern breed is descended from a number of breeding programs of white terriers in Scotland prior to the 20th century. Edward Donald Malcolm, 16th Laird of Poltalloch, is credited with the creation of the modern breed from his Poltalloch Terrier, but did not want to be known as such.