If you've never had a Terrier before be prepared for another sort of dog. Sure there are differences dog to dog but most have some of the same tendencies.

Dogs are basically domesticated animals, genetic selection. Most Terriers are a little less domesticated than most dogs.

Many Terriers aren't particularly sociable, four main tendencies, prey drive, fighting, killing and sex. The male/male, female/female and who is the alpha thing seems stronger in most Terriers. In fact many are born convinced they are an alpha with any other dog or you. Many seem to have no size sense whatsoever. Antidote: We had the task of getting a sounder of Hogs out of a giant Corm field. The Hogs ran a pack of around ten dogs ragged and were still in the Corn. We decided to try Terriers thinking they were smaller and could navigate through the Corn stocks easier. The Terriers left the Corn field, attacked a bull in a pasture, a half dozen latched onto the Bull and refused to let go. The Bull broke through the fence trying to escape and ran through the center of town.

Pound for pound they are impressive. Mine are around 20 lbs. I doubt there is a Fox on the planet that can outfight one, even with a considerable size advantage.

A couple of antidotes. One of mine killed a full grown German Shepard, damaged his throat so bad he died two weeks later.

A friend had one that caused an estimated $1500 of damage to his living room.

A lot of people get a Terrier and give up in short order.