My GSP has (today) turned 8 months old. I was out with my Mum and my toddler walking this morning. Our young dog was off the lead having a lovely time investigating everything. Suddenly he started barking - the way he does if there is someone at the door and he doesn't know who it is yet. He was barking at an oldish man who was walking along near us.
I know very little about dogs but it looked like my GSP was trying to protect us. He was close by but he wouldn't recall (he is normally great) - just stood there barking and then taking a few steps towards this man. I was embarrassed. The man then ran at the dog which scared him. My Mum got the dog by his collar and he calmly responded to being put back on the lead.
What is going on? What should I do? Does this mean I now need to neuter him before it becomes learned behaviour? Thanks for any advice. This pup has never even cocked his leg before!