Hi all im new here and am hoping for some help dexter is my new puppy his 5 months old and as all puppys is sometimes good sometimes bad , but the one thing I cant seem to marster is letting him off the lead . Last week he was fine and this week his a nightmare , Today he ran miles from me and didnt look for me once luckly a kind dog owner grab him for me . He seems to have no fears. We walk on the beach every day for at lest a hour if not more . His very good when im at work and dosent chew stuff up only his toys and his getting used to going potty outside but its the lead thing its driving me mad . Im trying to be a good pack leader but as this is my first puppy i get the feeling im doing lots wrong . I no these puppys can be hard work and im trying my best I love Dex very much but it feels like he just dosent want to be with me when we are out of the house . In the house his so loving. All help and advice is much needed.