olivia is right, i walk kaiser off lead but only when i am in my park because it has closed gates, but trust me, when they see a rabbit or something similar your recall goes out the window, kaiser chased a rabbit one day and caught it, took me nearly an hour to get him back on the lead, its just the way they are built, act on instinct, so just be careful, maybe only let off lead in a closed space or dog park, or even get a long lead like a 50 foot or 100 foot, ive a 100 foot lead for parks that kaiser doesnt know, and its honestly just as good, anyways, keep the training up and hopefully your puppy lives a long and happy life