Resentment is a sign that your dog no longer believes you are trustworthy. There are several possible causes for this, including neglect, abuse—either physical or emotional—or just not living up to your expectations and training. Rebuilding trust with a resentful dog requires persistence, patience, and time, regardless of the cause.

Adult rescue dogs frequently exhibit some initial aloofness. Chances are, you have already seen situations when you ask to pat someone's dog only to have it ignore you or try to flee.

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