Instinct is the actions and behaviors that are habitual and therefore automatic responses to a situation. True instincts are not emotionally driven because they require no thought just a trained or natural response. As anything else there are good instincts and undesired instincts. For us humans we have the ability to evaluate a situation to possible disable a problematic instinct whereas Dogs and most animals aren’t going to reason a situation out but will follow an instinctual behavior. So we must curb unwanted Dog instincts (such as to chase another animal) by providing manageable instinctual exercises accompanied with proper training.