Well I was sitting in my living room with my dog Petey who is only 5 months on my lap, My wife's step-dad had pulled up in the driveway and she knew he was coming but I was unaware. Well he just walks in the house without making his presence known and my boy Petey jumps and kind of rushes growling and barking. He has never acted this way I have never heard him bark before other then whimpering while he's sleeping. I didn't say anything I was kind of shocked. He did stop once he recognized who it was. Should I have corrected him or was he just being protective?