At Easter we rehomed a really lovely but very boisterous puppy (5 months old). He is coming up to 10 months old now. He has always pulled on the lead, we bought a non pull harness which helped at first but no longer does. He is a lab German shepherd x so a big boy. We have just come back from a week away and he has been at the kennels. He was naturally very excited to come home, but he has almost completely forgotten how to behave on a lead! He is really digging in and dragging me which is hard to handle with 2 under 6's.
Any advice? He is unneutered, if that makes a difference.
Thanks!