I have a planned vacation to Ireland for 10 days starting May 7th. Malu will be about 19 weeks at that point. I planned on leaving him at home with my roommate while I am gone. My roommate's girlfriend, who has been my main dog walker during the day, will also be helping take care of him while I am gone (they adore each other). Unfortunately, he is not very fond of my roommate. A few weeks ago, he was very fearful of him and would even growl and snap at him (the only person he has ever shown this kind of behavior towards). He has came around quite a bit and does not exhibit any of that extreme behavior anymore. He will sniff and lick my roommate's hands and even sit on the couch with him, he just won't cuddle up with him or let him pick him up.
I am not at all concerned that he will not be cared well for, I am more concerned about behavior changing. Is 10 days a long enough time period for him to pick up any bad behaviors? My roommate doesn't really see eye to eye with me on dog training. I have specifically instructed him never to discipline my dog, other than verbally, and he has respected that (He from the school of "rub his face in his mistakes" "smack him with a rolled up newspaper" which we all know doesn't work). I trust him not to do anything bad with the dog I am just worried that because he respects me and will not discipline the dog the way he would want to, he may not really make an effort to train the dog at all. Is this 10 day period enough for him to fall into any really bad behaviors that I can't recover from?
Oh, and I am aware that this is poor planning on my part. I am hoping I can make the best of the situation without canceling the trip.