new staff bitch pup

Hi everybody I have a 15 week old staff bitch name Bella I keep her with our 13 year old terrier bitch they get on great together but I am worried will she do harm to the old dog when she gets older also at what age can I bring her for long walks

I'm sorry I can't help but am sure others will be along soon for you

Have a read of this about the exercise  

http://staffy-bull-terrier.com/how_should_i_exercise_my_staffy_pup

Can't seem to be able to view the pics???? 

You should be able to have both out for long walks once the youngest is about 12 - 18 months old, high impact exercise on a young dogs ligaments can do irrepairable damage.

Why do you keep saying that you think the pup will do harm to your oldie?

The general rule of thumb for walking pups is 5 minutes for each month of age on lead, with some free running off lead on soft ground as long as the pup is allowed to rest whenever it needs to.