The document discusses three favorite dog breeds of the author: Cairn Terriers, Yorkshire Terriers, and Airedale Terriers. It provides details on the origin and traits of each breed. Cairn Terriers originated in Scotland and were early working dogs. Yorkshire Terriers were developed in Yorkshire, England in the 1800s and are small and silky coated. Airedale Terriers also originated from Yorkshire and are the largest of the terrier breeds. In conclusion, the author notes that all dogs have unique personalities and abilities despite their variety of breeds.