Usually they will grown to adult size by there first birthday! Usually for small dogs they say 7 or 8 months but i noticed that they actually don't finish until they are closer to one year old.
mine stopped growing at 8 months
Jack Russell live a long time. About 15-20. The oldest Jack Russell I've met is currently 22. The live this long time because they are small, easlily kept dogs.
At 10 months time.
13-14 years if cared for correctly (:
because jack russells are good at pest control
None, Jack Russells are dogs, they have puppies not babies.
yes i have 2 jack russells and both of them have webbed feet.
My jack is 13 years old and he's just losing one now
No.
dobermens
no they are from England
mammal
water
no they are hyperactive
Yes, often they will become a little more placid after the 5 years of age mark, but don't expect any miracles. They are a high energy breed, and will be relatively high energy compared to most other dogs, for life.
you mean breed right