Mickey doesn't really get any looks because he is "Lassie", but how do they know he won't bite their hand off? Especially these older people who bring up their grandchildren and just start petting him. I doubt it but Mickey could jump them at any second.

My cousin owns a Golden with agression problems and a sweetie for a GSD. People always end up petting the wrong one.

Whatever, their loss
Exactly! I would never pet a dog without checking with the owner first but I certainly wouldn't avoid a Dalmation or Chow.