My 8 month old male Boxer puppy is very shy of strangers at home. We go to the dog park all the time and he plays with other dogs non-stop and visits owners with no problem. We also have a powder puff Chihuahua/Chinese Crested cross who is not scared of anything (also 8 months). Pyx (my boxer) minds very well- couldn't ask for anything better. I was really concerned when my sisters boyfriend came over- who Pyx knows- and he acted scared. He has never hurt Pyx- he spoils him with pets. It was really weird. Is this just him being a puppy and not having come into his own yet? I've never coddled him. He's fine out of the house- except at our cabin, where he acts the same but only if he's inside- which he's only been to once. He's not aggressive at all. At my parents house he seems fine with strangers. Any thoughts? I hate seeing him scared! He is white- but absolutely no hearing/vision problems. At a loss!