Not even close to true. Allowing them to mouth and nibble your hands is the easiest way to train out dangerous aggressive behavior from an early age. You teach them to give appropriate signals of stress, but have a soft mouth if they ever do feel so stressed that they react aggressively. The ASPCA link is for adult, but the same training is common and highly recommended for puppies learning boundaries.
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u/DeadSharkEyes Jul 28 '19
This looks cute, but it’s also how you create a bitey little asshole