Toto, the canine companion of Dorothy in The Wizard of Oz, was portrayed by a female cairn terrier named Terry in the 1939 film adaptation). Cairn terriers are small but feisty dogs that originated on the Isle of Sky in the Scottish Highlands and are related to the West Highland white terrier. In the original book, The Wonderful Wizard of Oz, author L. Frank Baum never specifically named what dog breed Toto is, but described him as a little black dog with small, twinkling eyes. The books illustrator, W. W. Denslow, drew the dog as a type of small black terrier, which some believe to be a Yorkshire Terrier. However, in the sequels, Baum mentions that Toto was a Boston Terrier. Despite the different descriptions, the cairn terrier is the breed that was chosen to portray Toto in the iconic film).