The Jack Russell Terrier is happy, devoted, loving, and very perky. It will rise up early in the morning and play about at its leisure, but most enjoys its time with a job to do. These dogs are amusing and entertaining, and will be eager to play with new toys, games, and people. They are friendly and kind towards children and strangers and will happily introduce themselves to new people. These dogs are very determined and independent as well; it is important to remember this when they are during their training stages as they can be difficult to manage at times. Still, diligence and perseverance with these dogs will pay off.
The Jack Russell Terrier may be aggressive with other dogs, especially during its early years of socialization. This is why it is especially important for these dogs to learn from early socialization and they must be introduced to different dogs and animals whenever possible. These dogs do have natural hunting abilities and a strong instinctive quality. They are stronger than the average terrier and should generally not be trusted with smaller animals. They are driven to hunt, so it is important to keep them on a tight leash in new territory. Unless they are very well-trained, these dogs can be difficult to manage off the leash and may run off far from home.
These dogs can become destructive if they are restless or bored, and it is important that they have plenty of activities to enjoy when they do not have access to formal exercise. Regular activity will keep them from becoming occupied in harmful actions and activities overall. The Jack Russell Terrier is a natural climber and can jump and climb over fences relatively easily. These dogs do get excited very easily and are strong-willed; they will do their best to achieve a goal and will run after new things easily. Making sure they are well-trained well before they have a chance to do so is in the owner's best interest.
These dogs are very loving and affectionate, and will need constant attention. They will turn to excessive barking and other unmanageable behavior if they are not getting the attention they need, and may even resort to digging and destroying objects in the home. It is important to vary their activities and make sure they are actively engaged with the family on a regular basis. These dogs do have a tendency to be 'cat-aggressive' and will not get along well with other small animals in the home. They often get involved in fights with rabbits and other small fur-bearing animals so it is important that they are kept far from the cages of any household pets as often as possible.
These dogs are inquisitive and curious, and due to their small sizes, can find themselves in a lot of trouble very easily! It is important to remember that these dogs do not enjoy being 'lap dogs' and would rather play about freely. They are not comfortable sitting in one place for extended periods of time, and will need to be taken to new environments and settings on a regular basis.