O wise experts, in your opinions is it possible to retrain/improve training in a 4yr old dog? Reading all the recent posts about 100% recall got me wondering; poochie (no that's not her real name) will resist all but squirrels when she's off lead and we have a ball in our hand, however if the ball is put away/gets lost, she's not quite so co-operative! Also she's a bugger for jumping up a visitors (everyone's come to play, even the poor Sainsburys delivery man) - even if they ignore, greet humans first, get her to sit, etc, just when you think she's calm & ready to stay hello, launches herself like a sodding jack in the box! Any thoughts gratefully received (but no flaming please, I'm just asking out of interest, not asking for a kicking
).