In 2009, there were 1073 Jack Russells registered with the ANKC, compared to 18 for the Parson Russell terrier. Small V-shaped ears of moderate thickness are carried forward on the head. When the dog is alert, the tip of the V should not extend past the outer corner of the eyes. The tail is set high and in the past was docked to approximately 10 cm (5 in) in order to provide a sufficient hand-hold for gripping the terrier.The Jack Russell should always appear balanced and alert. However, the Parson Russell is a conformation show standard whereas the Jack Russell standard is a more general working standard.The Russell terrier, which is also sometimes called the English Jack Russell terrier or the Short Jack Russell terrier is a generally smaller related breed.