Upbeat, lively, inquisitive, and friendly, the jaunty Russell Terrier was developed by England's "Sporting Parson" for use in foxhunts. The adorable Russell Terrier looks like a plush toy come to life but is an eager, tireless working terrier. These jaunty little fellows pack lots of personality into a compact, rectangular body standing 10 to 12 inches at the shoulder.
More at https://www.akc.org/dog-breeds/russell-terrier/
