When I lived with my parents we had 3 Jack russells. I absolutely adore this breed of dog. Penny (*****) for 16 years which was a black and white with touches of brown, Titch - (*****) rusty coloured (my fav of the 3) for 14 years and Max for 7 years pure black (he was a menace).
Unfortunately, and you may need to correct me on the disease they all died of (parva?) in a space of a months. Anyway, adore the breed and grew up with 3 jack russells as a kid.