But what are Border Terriers actually like though?
Border Terriers are, as the standard says, essentially working terriers. They were originally bred to assist in the control of foxes in the border country between Northumberland and Scotland. Even though you may want a Border Terrier purely as a pet; you cannot deny their heritage and instinct....especially when out for a walk and they despatch a passing mouse!
Sometimes this instinct can cause them to 'turn a deaf ear' to your calls when out; but if you work on a good, consistent, reliable recall as a pup this should help in this type of situation.

A Breed Standard is the guideline which describes the ideal characteristics, temperament and appearance of a breed and ensures that the breed is fit for function. Absolute soundness is essential. Breeders and judges should at all times be careful to avoid obvious conditions or exaggerations which could be detrimental in any way to the health, welfare or soundness of this breed.