The Border Terrier is a small to medium-sized breed of dog that originated in the border region between England and Scotland. They were originally bred for hunting and working on farms, specifically for hunting foxes and vermin and herding livestock. They are known for their courage, endurance, and versatility. They have a distinctive double coat, with a wiry topcoat and a soft undercoat, and they come in a variety of colors, including red, wheaten, blue and tan, and grizzle.

The Border Terrier is a lively, friendly, and energetic breed. They have a moderate to high energy level and require regular exercise and mental stimulation to prevent boredom and destructive behavior. They are known to be very sociable and enjoy the company of other dogs and people. They are also known for their strong hunting and herding instincts, and can be trained for various activities such as obedience, agility, and earthdog trials. They are also known to be good with children, and can be taught tricks and games.

Due to their strong hunting and herding instincts, Border Terriers require consistent, firm, and positive training starting at an early age. They should be trained in basic obedience and socialization to prevent them from becoming aggressive or overly dominant. They are also known to be very vocal and can be trained to bark only when necessary.

Border Terriers have a distinctive double coat, a wiry topcoat and a soft undercoat, that requires regular grooming to maintain its condition. They shed moderately throughout the year, and require regular brushing and clipping to keep the coat in good condition.

Overall, the Border Terrier makes a good companion for experienced dog owners who have the time and energy to provide them with regular exercise and training. They are friendly and affectionate with their family, and make great watchdogs. They are not recommended for first-time dog owners or people who live in an apartment or have a small backyard. They need a lot of space to run and play, and are not recommended for city dwellers. They are also not well suited for homes with small animals or children. They have a lot of energy and need to be kept busy with activities and tasks. They also require a strong leader who can provide them with the proper training and socialization to prevent them from becoming aggressive. They are also known for their strong hunting and herding instincts and are used in hunting, obedience, agility and earthdog trials.