What is generally the best approach to take with fearful or unknown temperament dogs?

Moving slowly, avoiding eye contact, and crouching down is generally the best approach when dealing with fearful or unknown temperament dogs because this method helps reduce the perceived threat to the dog. Quick movements or direct eye contact can be interpreted as aggressive or confrontational behaviors, potentially escalating the dog's fear or anxiety. By crouching down, a person appears smaller and less intimidating, which can encourage the dog to feel more comfortable and safer in the situation. This gentle approach promotes trust and allows the dog the option to approach at its own pace, which is crucial for building a positive relationship with a fearful dog.