What does it indicate if a Jack Russell is "digging" excessively?

If a Jack Russell is "digging" excessively, it often indicates that they may be bored or have excess energy. This breed is known for its high energy levels and strong work ethic. When they do not have enough physical or mental stimulation, they may resort to digging as a way to release pent-up energy or to find an engaging activity.

Jack Russells thrive on tasks and activities that challenge them mentally and physically; without these, they seek out alternative behaviors to cope with their boredom. For example, they may dig in the yard, which can be a form of physical exercise as well as an attempt to create their own entertainment.

While digging can have other motivations, such as searching for food, trying to escape, or marking territory, the primary cause in most cases of excessive digging is related to their need for stimulation and exercise.