hi all :)
I have just recently rehomed a lab/staffy cross, Infact two weeks on monday :D
He's a great dog, they think around a year old, but not too sure as he was a stray. Great temperment, was rehomed before I got him, but brought back as 'he was too big for the house!' 
Anyways, we have signed up and are on the waiting list for training classes, but on the meantime could do with some help....
He loves his walks, and needs them as overweight! But if anyone approaches him he jumps up. (I have him sitting down when dogs/people pass, but some still insist in coming close, although I always warn!) He is a strong dog, and means no harm but could easily knock a younger person over. I just cant seem to find away to stop him, and on the last walk a boy of around 8 came to pat him, I told him he will jump, best not to, but he came anyways and Toby jumped, didnt knock him over and the boy didnt mind, but I'd rather he didnt.
I should add I have a 5 and a 2 year old, and he doesn't jump on them.
Thanks!