The Jack Russell Terrier hails from England, where it was noticed during the 1800s. It was named after Reverend John Russell, a parson who took these small terrier-type dogs when he went out fox hunting. The Jack Russell Terrier's job was simple, chase the fox (above ground or below ground) but see to it that the fox was not hurt. Very attentive and self-assured, this little dog has always loved his foxhunting job and has excelled at it. The reason for his skill at this sport is his good attitude, sturdy (if small) structure, and his durable coat that keeps all kinds of weather at bay as he springs through hedges and briars, typical terrain of a fox chase course. The Jack Russell Terrier is also a dog that shows great courage and determination while working.
In addition to his excellent working nature, the Jack Russell Terrier breed does wonderfully well as a house companion and family member. If you should decide that this affectionate and playful dog would make a good family member in your household, your decision would be a good one, as long as you have 'get-up-and-go' and lots of loving attention to shower on him. Lots of energy characterizes this highly intelligent dog. His curiosity at the world in general will have you continually smiling. He will always be ready to run and play (even when you're not). Remember the scene from the movie, Dr. Doolittle? "Throw the ball, throw the ball!"
This energized pup, however, can be a drawback if your energy doesn't match his. Regular training is required to keep him in line and to absorb his busy, bouncing mind. The thrill of the chase (from his fox hunting instinct) has to be replicated so that the Jack Russell Terrier is able to run and have fun. Besides, he needs his share of regular exercise. If he doesn't get this, expect a grand escape from your property or bad behavior (digging under fences and through your carpets, continual barking, etc.). He can become so obstinate when he doesn't get his way that he may become an unmanageable, barking menace in your house. This breed has shown aggressive behavior on occasion, especially when not trained well and exercised as needed. 
So keep your own energy levels up and maintain a cool patience.
It's always good to find the right Jack Russell Terrier for your home by visiting local kennels that have been referred to you by your prospective veterinarian. Kennel professionals can usually advise you about specific Terrier characteristics that each individual within the litter possesses. The breeder or kennel should be able to provide you with all the information regarding health issues that may arise, trainers who may assist you with the education of your dog, and habits that will affect your family. Always ask for references and do not worry about offending breeders by demanding these important recommendations. They prefer to provide a Jack Russell Terrier to a family who will take the adoption process and purchase seriously.
