My 8 month old GSD has been fine off the lead for at least 3 months now, came back when called (and then was praised), fetches etc.
But all of a sudden he has decided he does not want to come back.
Throughout our recent walks as soon as he is let of the lead he is not coming within about 6ft of me or my partner, neither of us have struck/hit/punished him for coming back at all but now getting him back on the lead is such a struggle and not a pleasant experience for either parties.
Also, occasionally when he is let outside to do his business, if he sees something or someone down the street he will run straight at them - alert and barking, and will not come back until we tempt him back with treats or manage to go and get him.
Any help is appreciated as I am starting to lose my patience!