When Does Good Stress become Bad Stress?
Even though a dog benefits from good stress, the truth is that too much of a good thing can be bad. For instance, if a dog is continually exercised every day without enough rest, the effects from stress become negative instead of positive.
Similarly, dog owners must remember that mentally stimulating activities, such as trips to the pet store or time spent around many new people or animals, are best performed in small doses. Even though these activities are enjoyable for most dogs, they still induce a high level of stress because the physiological reaction to fun activities is largely the same as the reaction to scary activities.
Additionally, a fun activity can become stressful if the dog is already suffering from underlying stress. For instance, a new home environment, a change in routine, a change in diet or sleep, pain, illness, and exposure to something new can all change the manner in which a dog reacts to eustress.