i have a jack Russel tarrior and they can live till about 14 unless they get kidney stones or somthing but they are vary strong dogs!most little dogs such as a jack Russel tarrior can out live big...
length of dog pregnancy.
Dogs usually sustain preg. for 61-64 days but can be sooner or later depending on the female. My dog goes in 57days and I had a rottie years ago that would go to 68 days so...
Terriers live longer then other dogs. Jack Russells live for a very long time, 15 or more. The oldest jack that lived was 26 years and the oldest i no personally is 21.