These variants are often known as 'Tri-Color', 'Chocolate', and 'White and Tan', and 'White and Black' respectively. The height ranges from 8.5–11.5 inches at the shoulder (21.5–29.2 cm) and weight from 3.5-9 pounds. They are in many ways similar to the Miniature Fox Terrier. Toy Fox Terriers, like many active and intelligent breeds, can learn to respond to a number of words. Toy Fox Terriers were used commonly in circus shows by clowns, and they are said to make great companions for owners with a good sense of humor.As a terrier breed, they are often active, though perhaps not as active as the Jack Russell Terrier, and are said to be well suited for older owners. They are quite trainable and often cited as making wonderful companions for people with disabilities.