dog behavior is strictly a reflection of their owner

Given that most dogs are adopted from shelters, dog behavior is often a reflection of early upbringing. The current owner can train and teach their dog, but some behaviors and fears set in fairly early on.

Moreover, many dogs are beaten or worse when they’re young, and undoing that fear and trauma is a lifelong (for the dog) struggle.

Thus, dog behavior is far from “strictly a reflection of their [current] owner.”