Hey all lab lovers!! My Hershey is two today. I have had him since eight weeks. He is such a sweet boy. He is GREAT with my seven year old daughter. However....when people come to the door he turns into a CRAZY man! He charges the door with tail tucked barking and growling. He WILL back off when I command and he will run to his crate and sit in there and growl at the visitor. I have a business in my home and have a lot of people coming and going. If they try to make nice with him and speak to him he will jump and growl. If they ignore him he will "sneak" (actually crouching) out of his crate towards them. If they notice and speak to him he will bark, growl and run. I am horrified at his behavior with other people. Like I said he WILL back off on my command. Why isn't he the sweet friendly boy to other people as he is with his family? Any suggestions??