Whoa up!!! We use short two letter words because phonetically and physically they are the easier for us and the easiest for the dog...but it is not about the word you are using, it is about the corrective action and the modification of the unwanted behaviour that is important here...so the word is used to gain the dogs attention by mostly it tonal quality which imitates the gruffness of the growl...the bitch remonstrating her puppies isnt growling in a trill like fashion!!
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