PS to the comment about fear-bites (and othe comments). Some of the same folks who evoke them are the same folks who abuse people violently out of their own fear.

Helping to retrain a fear-biting or fear-growling dog is a separate issue. No guest at my home would be welcome to attempt bribing or pepper-spraying my dog and would not be invited back. However Walmart et AL sell a spray one can spray on one's own clothes (or carry as a ponder on one's person that dogs and cats will avoid. (It is a helpful training aid we're using to break a cat-eating habit our rescue dog survived in the wild when other food was not available.)

~Susan