My 11wk old pup, Havok has been barking excessively at other people & dogs! He is already showing signs of reactivity! He barks at them when they walk by or when he sees them from a distance. He lunges at them as well and I say no and have him sit or I go the other way and try to redirect him. It's not working and he still barks and lunges at people and dogs walking by. It doesn't seem like he's barking aggressively, but more of an unsure, maybe fearful bark? When people and dogs come up to finally greet him, he's barking and barking but he's just so happy to meet them. So I'm assuming it's a happy, excited bark? I have only had him for 2 weeks now, and he was been like this since our first walk, but I thought he would grow out of it cause he's still a puppy. We work on our socialization daily, but it is obviously limited because he hasn't received his second series of shots yet. Any advice please? I do not want him to grow up reactive towards other dogs and people!