Rescue dog - agression with visitors
Hi, I have an almost 2 year old pit mix rescue that we've had for about 6 months. He is great with my immediate family and only one other person (my son's girlfriend). Anyone else that comes to our house he gets very aggressive with - barking, snapping and lunging. At first he was ok in the driveway and only became aggressive when they entered the house; now it's like this with anyone that steps foot in our yard. It's causing me great anxiety because I feel like we can never have anyone over. My daughter and son in law are expecting a baby and it worries me to think of every having them over. I've tried clicking/treating when he's calm which works to a point, but the entire time someone is in the house his full attention is focused on them or any sound they may make (if in another room). I make sure they don't knock/ring the doorbell, I just have them come in through the garage which is where we always enter from. Any suggestions would be greatly appreciated! thank you.