Except at strangers, they bark indiscriminately. In case you have trouble reading the feelings of a stranger, almost everytime they hate being barked at.

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dcrazy 2 hours ago | parent | next [-]

I can’t believe I have to say this, but… not all dogs bark at strangers. This is highly breed- and dog-dependent.

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chrismatheson 12 hours ago | parent | prev [-]

Or the owner was nervous of the stranger for some reason and the dog picks up on that and moves into protective mode.

	▲	lifestyleguru 12 hours ago \| parent [-]
		Person hating being barked at certainly is delighted to conduct extensive analysis which one and who is more nervous and protective.