You know how people can be - sometimes they have dogs and just leave them outside all the time and they never get a chance to socialize. Or it could be like Bimmer, who really just doesn't want to deal with strangers, especially after someone poisoned his Buffy a couple of years ago. He was a fairly friendly dog, just a bit standoffish before then, but afterwards he's just different. He won't let anyone touch him unless Charley or I are there and tell him it's okay. He won't even take treats from my Mom, and he's known her well since he was a pup.