the jack russell terrier is bred to have the courage to follow a fox to ground and stay with it until the quarry bolts, or the terrier is dug to. Their job is to to bay (bark) at their quarry, charge it if necessary, and perhaps exchange bites, their job is not to kill. It is best to go out with people that are experienced in earthwork, as many things can happen in the field, some of them very tragic.

The ideal working terrier hunts ahead, finding their own sette, can get along with any dog in the field, and listens to any person out with them. They have the structure to allow them to creep into holes and make offensive and defensive maneuvers. For this they need to be narrowly built, a small flexible chest, decent length of neck, and good strong teeth. A good coat affords them protection from the elements.

WARNING! Skunk spray is lethal underground